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COMEDK2022PhysicsMotion in One Dimension

A car is moving with a speed of 54 km/h . If the driver applies brakes and it stops after 3 s , then how much distance is covered by the car before coming to rest?

Options

  1. A22.5 ~m
  2. B20 ~m
  3. C25 ~m
  4. D45.2 ~m

Correct answer

A. 22.5 ~m

Step-by-step solution

u = 54 5 18 = 15 , m/s , v = 0 , t = 3 , s s = ( u+v 2 ) t = ( 15+0 2 ) 3 = 7.5 3 = 22.5 , m Correct option: (1)

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