Question

a car weighing 1600 kg moving with a velocity of 30 mIs retards uniformly coming to rest in 20 seconds.
calculate the
intial and final momentum of the car
rate of change of linear momentum of the car
acceleration of the car


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Answer 1

Answer:

mass= 1600kg

intial velocity= 30m/sec

final velocity= 0m/sec

time= 20 sec

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intial momentum= m x u= 1600 x 30= 48000 kg.m/sec

final momentum= m x v= 1600 x 0= 0

change in momentum = final momentum- inital momentum= 48000-0= 48000kg.m/sec

acceleration= v-u/t

acceleration= 0-30/20= -3/2 m/sec²