Question

a car weighing 600kg moving with a velocity 30m/s retards uniformly coming to rest in 20 seconds. calculate

1)initial and final momentum of the car
2)rate of change of linear momentum of the car
3)acceleration of the car

Answer 1

1. (i) initial momentum = mv
= 30×600
=18000kgm/sec.

(ii) final momentum = mv
= 600×0
=0

2. change in momentum = m(v-u)/t
= 18000/20
= 900

3. accelearation = v-u/t
= 30/20
=1.5

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Answer 2

Answer:

A car weighing 1600kg moving with a velocity of 30m/sec retards uniformly coming to rest in 20sec. Calculate the : a. Initial momentum of the car b.

Explanation: