A boy completes one round of a circular ...

A boy completes one round of a circular track of radius r in 40 s. His displacement at the end of 2min 20s will be

A

Zero

B

`2pir`

C

`2` r

D

`7pir`

Text Solution

Verified by Experts

The correct Answer is:

C

Total time = `140` sec
Time for one round of a circular path = `40` sec
Then after time `140` sec he will complete half of circular path
So displacement `(D=2r)`

Promotional Banner

Promotional Banner

Topper's Solved these Questions

MOTION IN A STRAIGHT LINE
PHYSICS WALLAH|Exercise NEET Past 5 Years Questions|5 Videos
MOTION IN A STRAIGHT LINE
PHYSICS WALLAH|Exercise NEET Past 5 Years Questions|5 Videos
MOTION IN A PLANE
PHYSICS WALLAH|Exercise NEET Past 5 years Questions|10 Videos
MOVING CHARGES AND MAGNETISM
PHYSICS WALLAH|Exercise NEET PAST 5 YEARS QUESTIONS |12 Videos

Similar Questions

Explore conceptually related problems

A boy completes one round of a circular track of radius 20 m in 50 seconds. The displacement at the end of 4 minute 10 second will be

An athlete completes one round of a circular track of radius R in 20 second. What will be his displacement at the end of 2 minute 20 second?

An athelete completes one round of a circular track of radius R in 40 seconds . What will be the displacement at the end of 2 min. 20 second ?

If a body completes I round of a circular path of radius 7 cm, its displacement is

An athlete completes one round of a circular track of radius 10 m in 40 s . The distance covered by him in 2 min 20 s is

A body completes one round of a circle of radius R in 20 second. The displacement of the body after 45 seconds is

An athlete complete one round of a circular track of diameter 200 m in 40 s . What will be the distance covered and the displacement at the end of 2 minutes 20 s ?

An athlete complete one round of a circular track of diameter 200m in 40s. What will be the distance covered and the displacement at the end of 2 minutes ?

PHYSICS WALLAH-MOTION IN A STRAIGHT LINE-Level-2

A boy completes one round of a circular track of radius r in 40 s. His...
Text Solution
|
An old person moves on a semi circulasr track of radius 40.0 m during ...
Text Solution
|
A moter car covers (1)/(3) rd part to total distance with the speed 30...
Text Solution
|
A truck travelling due north at 20 m/s turns east and travels at the s...
Text Solution
|
A car moves a distance of 200 m. It covers the first-half of the dista...
Text Solution
|
A particle is moving with velocity 5 m/s towards cast and its velocity...
Text Solution
|
An object will continue accelerating until
Text Solution
|
The displacement 'x' of a particle moving along a straight line at tim...
Text Solution
|
The velocity of a body depends on time according to the equative v = 2...
Text Solution
|
The displacement is given by x = 2t^(2) + t + 5 , the acceleration at...
Text Solution
|
A particle moves with constant acceleration for 6 seconds after starti...
Text Solution
|
A ball is thrown upward and reaches a height of 64 feet, its initial v...
Text Solution
|
Two bodies of different masses m(a) and m(b) are dropped from two diff...
Text Solution
|
Two balls A & B, mass of A is m and that of B is 5 m are dropped from ...
Text Solution
|
A body starting from rest and has uniform acceleration 8 m//s^(2) . ...
Text Solution
|
A stone dropped from a building takes 4 s to reach the ground. The hei...
Text Solution
|
In the previous question, the total distance traveled is
Text Solution
|
The displacement-time graph for two particles A and B are straight lin...
Text Solution
|
An alpha - particle in a cyclotron changes its velocity from 30 km/s s...
Text Solution
|
A car runs at a constant speed on a circulat track of radius 100 m. T...
Text Solution
|