Home
Class 7
PHYSICS
An athelete runs alongs a circular track...

An athelete runs alongs a circular track of radius 14 m with a speed of 11 m `s^(-1)` then the time taken by the althete to complete 6 rounds is ______

A

48 s

B

0.8 min

C

0.0133 h

D

All the above

Text Solution

Verified by Experts

The correct Answer is:
D

Speed of the athlete = 11 ` ms ^(-1)`
Radius of cirular trach = 14 m
Number of rounds completed = 6

Total distance trach by the athlete = ` 6 xx 2 pir`
`( 6 xx 2 xx 22xx14) /(7 xx14) = 48 s `
`= 0.8 min = 0.0133 h`
Promotional Banner

Topper's Solved these Questions

  • KINEMATICS

    PEARSON IIT JEE FOUNDATION|Exercise Level 2|18 Videos
  • KINEMATICS

    PEARSON IIT JEE FOUNDATION|Exercise Level 3|6 Videos
  • KINEMATICS

    PEARSON IIT JEE FOUNDATION|Exercise Level 1 macth|3 Videos
  • HEAT

    PEARSON IIT JEE FOUNDATION|Exercise Test 2|14 Videos
  • LIGHT

    PEARSON IIT JEE FOUNDATION|Exercise ASSESSMENT TEST (TEST 2 (SELECT THE CORRECT ALTERNATIVE))|15 Videos

Similar Questions

Explore conceptually related problems

A particle is moving along circular path of radius 40 m with a uniform speed of 20m//s . Then the time taken for the particle to complete half revolution will be

A particle is moving along a circular path of radius 5 m with uniform speed of 5 m//s . What will be time taken by the particle in half revolution?

Mukesh walks around a circular track of radius 14 m with a speed of 4 km/hr. If he takes 20 rounds of the track, for how long does he walk?

An athlete starts running along a circular track of 50 m radius at a speed 5 m//s in the clockwise direction for 40 s. Then the athlete reverses direction and runs inthe anticlockwise direction at 3 m/s for 100 s. At the end, how far around the track is the runner from the starting point ?

An athlete is running on a circular track of radius 1m with a uniform velocity of 20m//s . Calculate (i) the difference in the magnitude of the displacement of the athlete and the distance covered by him in completing half a ground . (ii) magnitude of change in velocity of the athlete in half a round .

A man runs round a circular field of radius 50m at the speed of 12km/hr .What is the time taken by the man to take twenty rounds of the field? (a) 30min.(b) 32min.(c) 34 min.(d) None of these

A particle is moving along a circular along a circular path of radius 5 m with a uniform speed 5ms^(-1) . What will be the average acceleration when the particle completes half revolution?