Snapsolve any problem by taking a picture. Try it in the Numerade app?
Talk to our experts
1800-120-456-456
A man travelling at \[10.8kmph\] in topless car on a rainy day. He holds an umbrella at an angle of ${37^\circ }$ with the vertical so that he does not get wet. If raindrops fall vertically downwards, what is rain velocity? A) $1m{s^{ - 1}}$ B) $2m{s^{ - 1}}$ C) $3m{s^{ - 1}}$ D) $4m{s^{ - 1}}$
- Question Answer
- A Man Travelling At 108kmph In Topless Car On A
Repeaters Course for JEE 2022 - 23
- Online Class
- Ask Doubt on Whatsapp
- Search Doubtnut
A man is travelling at 10.8 kmph in a topless car on a rainy day. He holds an umbrella at an angle of 37 ∘ with the vertical so that he does not wet. If rain drops faals vertically downwards, what is the rain velocity ?
More from this Exercise
The correct Answer is: D
Related Playlists
MOTION IN A PLANE
MECHANICAL PROPERTIES OF SOLIDS
MOTION IN A STRAIGHT LINE
Similar Questions
A man travelling at 10.8 k m p h in topless car on a rainy day. He holds an umbrella at angle of 37 ∘ with the vertical so that he does not wet. If rain drops falls vertically downwards what is rain velocity.
A man is travelling at 10.8 kmph in a topless car on a rainy day. He holds an umbrella at an angle of 37 ∘ with the vertical to protect himself from rain which is falling vertically downwards. What is the velocity of the rain drop ?
A man moving in rain holds his unbrella inclined to the vertical even though the rain drops are falling vertically downwards . Why ?
To a man running at a speed of 20 m/hr, the rain drops appear to be falling at an angle of 30 ∘ from the vertical. If the rain drops are actually falling vertically downwards, their velocity in km.hr is
A man walks in rain with a velocity of 5 kph. The rain drops strike at him at an angle of 45 ∘ with the horizontal. The downward velocity of the rain drops will be :
A man is going in a topless car with a velocity of 10.8kmph."l It is raining vertically downwards.He has to hold the umbrella at angle 53 0 to the vertical to protect himself from rain.The actual velocity of the rain is ( cos 53 0 = 3 5 )
A man walks in rain with a velocity of 5 kmph. The rain drops strike at him at an angle of 45 ∘ with the horizontal. The downward velocity of the rain drops will be :
A girl waking on a road in rain which is falling down vertically holds her umbrella at an angle of 60 ∘ to the horizontal.The ratio of the velocity of the rain and girl is
To a man walking at 5kmph rain appears to fall vertically, and when he doubles his speed it appears to make an angle of 30 ∘ with the vertical. Find the actual velocity of the rain. In what direction will rain appear to fall if the man suddenly turns around when his speed is 5 kmph?
When a boy is stationary, he observes that rain drops are falling at 30 ∘ to vertical direction. When he starts running with speed 10 m s , he observed that rain drops are falling vertically downwards. Calculate the actual velocity of rain drops.
AAKASH SERIES - MOTION IN A PLANE - Exercise -II
A Ship .A. steams down north at a speed of 8 kmph. And ship B due west...
Rain drops are falling down ward vertically at 4 kmph. For a person mo...
A man is travelling at 10.8 kmph in a topless car on a rainy day. He h...
When a man is standing, rain drops appears to him falling at 60^(@) f...
Two ships A and B 10 km apart on a line running south to north. Ship A...
A person walking at 4 m/s finds rain drops falling slant wise in to hi...
Wind is blowing from the south at 5ms^(-1). To a cyclist it appears to...
Rain is falling vertically with a speed of 30 ms^(-1). A woman rides a...
Two boys are standing at the ends A and B of a ground where AB = a. Th...
A man can swim in still water at a speed of 6 kmph and he has to cross...
A person can swim in still water at 5m/s. He moves in a river of veloc...
The velocity of water in a river is 2 kmph, while width is 400 m. A bo...
A person swims at 135^(@) to current of river, to meet target on reach...
The width of a river is 2sqrt(3) km. A boat is rowed in direction perp...
A boat moves perpendicular to the bank with a velocity of 7.2 km/h. Th...
A swimmer is capable of swimming 1.65 ms^(-1) in still watre. If she s...
A body is prjected with velocity 60 ms^(-1) at 30^(@) to horizontal. I...
In the above problem velocity after 3 seconds is
In the above problem the displacement after 2s is
Questions
A man travelling at 10.8 kmph in topless car on a rainy day. He holds an umbrella at angle of 37 0 with the vertical so that he does not wet. If rain drops falls vertically downwards what is rain velocity.
Remember concepts with our masterclasses., ready to test your skills.
detailed solution
Correct option is D
Tan 37 ° = V M V R
Talk to our academic expert!
Are you a Sri Chaitanya student?
Create Your Own Test Your Topic, Your Difficulty, Your Pace
Practice More Questions
Easy questions, moderate questions, difficult questions.
799 666 8865
6th Floor, NCC Building, Durgamma Cheruvu Road, Vittal Rao Nagar, HITEC City, Hyderabad, Telangana 500081.
Life at Infinity Learn
IL in the news
become a Teacher
get in touch
privacy policy
refund policy
takedown policy
terms and conditions
JEE Advanced
IIT JEE Foundation
NEET Foundation
CBSE tutions
IL for schools
knowledge hubs
scholarships
hall of fame
free study material
JEE Mock Tests
JEE study guide
JEE Revision Notes
JEE Important Questions
JEE Sample Papers
JEE Previous Year's Papers
NEET previous year’s papers
NEET important questions
NEET sample papers
NEET revision notes
NEET study guide
NEET mock tests
CUET previous year’s papers
CUET important questions
CUET sample papers
CUET revision notes
CUET study guide
CUET mock tests
CBSE previous year’s papers
CBSE important questions
CBSE sample papers
CBSE revision notes
CBSE study guide
CBSE mock tests
Free Fall Calculator
Table of contents
This free fall calculator is a tool for finding the velocity of a falling object along with the distance it travels. Thanks to this tool, you can apply the free fall equation for any object, be it an apple you drop or a person skydiving.
Read on to learn the free fall definition and discover the most daring examples, including the highest free fall in history (spoiler alert: it broke the sound barrier )! We'll also explain what free fall acceleration is and why we assume it's constant.
Check out the projectile motion calculator , which describes a case of free fall combined with horizontal motion.
Prefer watching rather than reading? Check out our deep dive into the concept of free fall here:
What is the free fall definition?
In free fall, an object moves under the influence of gravitational force only . The only acceleration is the acceleration of gravity g . No other force, including air resistance, is acting on such an object.
Interestingly, an object in free fall doesn't necessarily need to be falling (that is, moving downwards). For example, the Moon's motion satisfies all of the conditions listed above: there is no other force acting on it other than gravity (it's being pulled towards the Earth), and there is no air resistance, as there is no air in space.
Why doesn't the Moon crash into Earth, then? It's because Moon's speed is not directed towards Earth, but tangentially to its orbit. Since the Moon is moving along an elliptic orbit with a high enough velocity, its motion generates a centrifugal force, equal and opposite to the force of gravity.
You may want to check out our gravitational force calculator and see what an amazing force gravity is.
Free fall speed
From the definition of velocity, we can find the velocity of a falling object is:
- v 0 v_0 v 0 – Initial velocity (measured in m/s or ft/s);
- t t t – Fall time (measured in seconds); and
- g g g – Free fall acceleration (expressed in m/s² or ft/s²).
Without the effect of air resistance, each object in free fall would keep accelerating by 9.80665 m/s (approximately equal to 32.17405 ft/s ) every second. In reality, though, a falling object's velocity is constrained by a value called the terminal velocity .
What is the terminal velocity? As you have seen above, the free-fall acceleration is constant, which means that the gravitational force acting on an object is constant, too. However, the force of air resistance increases with increasing free fall speed. At some point, the two forces become equal in magnitude . According to Newton's first law, at that point, the falling body stops accelerating and moves at a constant speed. This speed is the terminal velocity.
In this free fall calculator, we neglect the influence of air resistance. If you want to consider it, head over to our free fall with air resistance calculator .
Free fall equation
If you want to calculate the distance traveled by a falling object, you need to write down the equation of motion. If the initial displacement and velocity are both equal to zero, it boils down to:
If the object is already traveling with an initial velocity, you have to take it into account, too:
You can immediately see that the object's distance traveled is proportional to the fall time squared. It means that with each second, the falling body travels a substantially larger distance than before.
Another interesting fact is that according to the free fall formula, the distance does not depend on the mass of the falling object . If you drop a feather and a brick, they will hit the ground at the same time… Or at least that's what science says! If you try to perform an experiment, you'll notice that, in reality, the brick falls to the ground first. Why does that happen? Again, because of air resistance. If you dropped the two items in a vacuum, they would both hit the ground at the same instant!
How to use the free fall formula: an example
Still not sure how our free fall calculator works? Don't worry – we prepared a simple example to walk you through it.
Determine the gravitational acceleration. On Earth, this value is equal to 9.80665 m/s² on average (which is also the default value set in the free fall calculator).
Decide whether the object has an initial velocity. We will assume v₀ = 0 m/s .
Choose how long the object is falling. In this example, we will use the time of 8 seconds .
Calculate the final free fall speed (just before hitting the ground) with the formula:
v = v₀ + gt = 0 + 9.80665 × 8 = 78.45 m/s .
Find the free fall distance using the equation:
s = (1/2)gt² = 0.5 × 9.80665 × 8² = 313.8 m .
If you know the height from which the object is falling, but don't know the time of fall, you can use this calculator to find it, too!
Highest free fall in history
You might already have learned the free fall equation, but it's one thing to understand the theory and a completely different one to experience it. There are many ways to experience the thrill of a free fall – you could, for example, jump with a parachute or try bungee jumping!
Technically, such a jump doesn't fulfill all the requirements of a free fall – there is substantial air resistance involved. In fact, a real free fall is only possible in a vacuum. Nevertheless, this is as close to the actual experience as you can get on Earth 😉
One of the most extreme examples of an almost-scientifically correct free fall is the jump of Dr. Alan Eustace, Google's VP of Knowledge, in 2014. Eustace jumped from a heart-stopping height of 135,908 feet (41,425 m) , thus setting a new record for a parachute jump.
Surprisingly, Eustace declined Google's help in the jump and funded the project himself. It was not an easy endeavor because such a leap required him to go up in a special balloon and wear a custom-designed spacesuit that protected him from sudden shifts in temperature (after all, he was jumping from the edge of space). The fall itself took 15 minutes, and the maximum speed exceeded 800 miles per hour – far over the sound barrier!
What is free fall speed?
Why is the weight of a free falling body zero.
It is not. An object in free fall will still have a weight , governed by the equation W = mg , where W is the object’s weight, m is the object’s mass, and g is the acceleration due to gravity. Weight, however, does not affect an object's free-falling speed . Two identically shaped objects weighing a different amount will hit the ground at the same time.
What is the difference between free fall and weightlessness?
Free fall is when an object is falling , only being affected by the force of gravity, while weightlessness is when an object has no weight due to there being no effect from gravity (it still has mass). Weightlessness can be achieved either in space or if an equal force can be applied in the opposite direction of gravity.
How do you find free fall acceleration of a planet?
To find the free fall acceleration of a planet:
Estimate the total mass of the planet in kilograms.
Find the radius of the planet , from its center to its surface, in meters.
Divide the total mass by the radius squared.
Multiply the result by the universal Gravitational constant :
6.67×10 -11 N·m 2 ·kg -2
The result is the gravitational acceleration of the planet, which is also its free-fall acceleration.
Gravitational acceleration (g)
Initial velocity (v₀)
Time of fall (t)
Velocity (v)
Velocity at time t.
6. 13 117 kmph 211 km A man travelling at 10.8 kmph in topless car on a rainy day. He holds an umbrella at angle of 37 with the vertical so that he does not wet.If rain drops falls vertically downwards what is rain velocity. 1) Ims 2) 2 m/s 3) 3 m/s 4) 4 m/s
Question asked by Filo student
A man is travelling at 10.8 km/h in a rainy diy. He velocity of a projectle is known, then time of fight holds an umbreila at an angle of 3 7 ∘ with the vertical so that ho doos not get wet. If raindrops falls vertically downwards, what is the rain velocity?
Views: 5,739 students
Updated on: Jan 8, 2023
Filo tutor solutions ( 1 )
Learn from their 1-to-1 discussion with Filo tutors.
Uploaded on: 1/8/2023
Connect instantly with this tutor
Connect now
Total classes on Filo by this tutor - 1,338
Teaches : Physics, Mathematics
Students who ask this question also asked
Views: 5,689
View solution
Views: 5,332
Views: 5,317
Views: 5,437
Stuck on the question or explanation?
Connect with our Physics tutors online and get step by step solution of this question.
Are you ready to take control of your learning?
Download Filo and start learning with your favourite tutors right away!
COMMENTS
A man is travelling at 10.8 km / h in a roofless car on a rainy day. He holds an umbrella at an angle 37∘ to the vertical to protect himself from the rain which is falling vertically downwards. What is the velocity of the rain? . Given: .cos 37∘=4/5A. 3 m / sB. 4 m / sC. 7 m / sD. 9 m / s
A man is travelling at 10.8 km /h in a roofless car on a rainy day. He holds an umbrella at an angle 37 ∘ to the vertical to protect himself from the rain which is falling vertically downwards. What is the velocity of the rain? (Given: cos 37 ∘ = 4 5)
A man is travelling at 10.8 kmph in a topless car on a rainy day. He holds an umbrella at an angle of 37 0 with the vertical so that he does not wet. If rain drops falls vertically downwards, what is the velocity of rain ? ... Moderate. A. 1 ms -1. B. 2 ms -1. C. 3 ms -1. D. 4 ms -1. Solution. v m → = 10. 8 ...
A man is travelling at 10.8 km /h in a roofless car on a rainy day. He holds an umbrella at an angle 37 ∘ to the vertical to protect himself from the rain which is falling vertically downwards. What is the velocity of the rain? (Given: cos 37 ∘ = 4 5)
A man is travelling at 10.8 km /h in a roofless car on a rainy day. He holds an umbrella at an angle 37 ∘ to the vertical to protect himself from the rain which is falling vertically downwards. What is the velocity of the rain? (Given: cos 37 ∘ = 4 5)
A man travels some distance at a speed of 12 km/hr and returns at 9 km/hr.if the toatal time taken by him is 2 hr 20 minutes ,find the distance. ... And now when we want to go to seconds, let's do an intuitive gut check. If something is traveling a certain amount in an hour, it should travel a much smaller amount in a second, or you know, 1/ ...
Step by step video & image solution for A man travelling at 10.8 kmph in topless car on a rainy day. He holds an umbrella at angle of 37^(@) with the vertical so that he does not wet.If rain drops falls vertically downwards what is rain velocity. by Physics experts to help you in doubts & scoring excellent marks in Class 11 exams.
Example 2: If a truck is travelling at 50 km/h and increases its velocity to 65 km per hour in 10 seconds, what is its acceleration? The answer is (65 kmph - 50 kmph) / 10s = (18.055 m/s - 13.888888 m/s) / 10s = 0.416667 m/s 2 (meters per second squared).
A man travelling at 10.8 km ph in a topless car on a rainy day. He holds an umbrella at an angle of 37^∘ with the vertical so that he does not wet. lf raindrops fall vertically downwards what is rain velocity. A. 1 m/s B. 2 m/s C. 3 m/s D. 4 m/s
A man travelling at `10.8 kmph` in topless car on a rainy day. He holds an umbrella at angle of `37^(@)` with the vertical so that he does not wet. If rain drops falls vertically downwards what is rain velocity. A. `1 m//s` B. `2 m//s` C. `3 m//s` D. `4 m//s`
A man travelling at \[10.8kmph\] in topless car on a rainy day. He holds an umbrella at an angle of ${37^\circ }$ with the vertical so that he does not get wet. If raindrops fall vertically downwards, what is rain velocity?
25 kn -I ph kmph 425 kpl WON A man travelling at 10.8 on a rainy day. He holds an umbrella at angle .8 kmph in topless car of 37" with the vertical wet. ... A man is walking on a road with a velocity of 3 Km/h when suddenly, it starts raining velocity of rain is 10 Km/h in vertically downward direction, relative velocity of the rain with ...
A man travelling at 10.8 k m p h in topless car on a rainy day. He holds an umbrella at angle of 37 ∘ with the vertical so that he does not wet. If rain drops falls vertically downwards what is rain velocity.
Given: A man is traveling at 10.8 kmph in a topless car on a rainy day. He holds an umbrella at an angle of 37 degrees with the vertical so that he does not wet. Raindrops fall vertically downwards. Find: The rain velocity. Solution: Please refer to the attached picture for the diagram. Vr represents the raindrops and Vm represents the motion ...
Given A man is travelling at 10.8 km/h in a topless car on a rainy day. He holds an umbrella at an angle 370 to the vertical to protect himself from the rain which is falling vertically downwards. What is the velocity of the rain in m/s. So Vm = 10.8 km / h Now the vertical is at 37 degree Now the velocity of rain is vertically downwards
A man is travelling at 10.8 kmph in a topless car on a rainy day. He holds an umbrella at an angle of 37^(@) with the vertical so that he does not wet. If rai ... A boat moves perpendicular to the bank with a velocity of 7.2 km/h. Th... Text Solution. A swimmer is capable of swimming 1.65 ms^(-1) in still watre. If she s...
A man travelling at 1 0. 8 k m p h in a topless car on a rainy day. He holds an umbrella at an angle of 3 7 ∘ with the vertical so that he does not wet. lf raindrops fall vertically downwards what is rain velocity.
A man travelling at 10.8 kmph in topless car on a rainy day. He holds an umbrella at angle of 37 0 with the vertical so that he does not wet. If rain drops falls vertically downwards what is rain velocity. Moderate. A. 1 m/s. B. 2 m/s. C. 3 m/s. D. 4 m/s. Practice More Questions. Easy Questions.
A man is traveling at 10.8km/hr in a topless car on a rainy day.He holds an umbrella at an angle of 37°to the vertical to protect himself from the rain - 115190… vickeydey vickeydey 15.04.2017
A man is travelling at 10.8 km h − 1 on a rainy day. He holds an umbrella at an angle 37 ∘ to the vertical to protect himself from the rain which is falling vertically downwards. What is the magnitude of velocity of the rain?
where: v 0 v_0 v 0 - Initial velocity (measured in m/s or ft/s);; t t t - Fall time (measured in seconds); and; g g g - Free fall acceleration (expressed in m/s² or ft/s²).; Without the effect of air resistance, each object in free fall would keep accelerating by 9.80665 m/s (approximately equal to 32.17405 ft/s) every second.In reality, though, a falling object's velocity is ...
Click here👆to get an answer to your question ️ 6. 13 117 kmph 211 km A man travelling at 10.8 kmph in topless car on a rainy day. He holds an umbrella at angle of 37 with the vertical so that he does not wet.If rain drops falls vertically downwards what is rain velocity. 1) Ims 2) 2 m/s 3) 3 m/s 4) 4 m/s
A man is travelling at 10.8 km/h in a rainy diy. He velocity of a projectle is known, then time of fight holds an umbreila at an angle of 3 7 ∘ with the vertical so that ho doos not get wet. If raindrops falls vertically downwards, what is the rain velocity?