Question

change in momentum when a car wighing 700 kg changes its speed from 100 m/s to 200m/s​

Answer 1

Answer:70000kg m/s

Explanation: change in momentum=final momentum - initial momentum

mv-mu=700×200-700×100

140000-70000=70000 kg m/s

Answer 2

Explanation:

GIVEN,

MASS, m = 1500 kg

INITIAL VELOCITY,u = 36 km/h = 36*5/18 = 10 m/s

FINAL VELOCITY ,v = 72 km/h = 72*5/18= 20 m/s

FORMULA :

CHANGE IN MOMENTUM,p = mv - mu

1500*20 - 1500*10

30000 - 15000

= 15000 kg m/s

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