Question

A bus is beginning to move with an acceleration of 1 m/s². A boy who is 48 m behind the bus starts running with constant speed of 10m/s. The earliest time when the boy can catch the bus is 

(a) 8 sec 

(b) 10 sec 

(c) 12 sec 

(d) 14 sec

Answer 1

Correct option (a)

Explanation:

Initial velocity of boy with respect to bus = 10 ms^–1 

acceleration of boy with respect to bus = –1 ms^–2