A car and a motorcycle are moving with same momentum. When equal retarding forces are applied, the car comes to halt in t1 secs. and the motorcycle in t2 secs. If the mass of the car is 5 times more than mass of motorcycle then which of the following is correct?
(A) t1 = t2
(B) t1 = 5t2
(C) t1 = 1/5 t2
(D) t1 = 25t2
You know that force is directly proportional to the rate of change of momentum. As the momentum is the same, and the retarding force is the same, the time taken will also remain the same.