Q25 of 124 Page 55

Calculate the momentum of the following:

(a) an elephant of mass 2000 kg moving at 5 m/s


(b) a bullet of mass 0.02 kg moving at 400 m/s

As we know,

Momentum, p = mv


Where, m is the mass of the body


V is the velocity of the body,


(a) m = 2000 kg


v = 5 m/s


p = (2000) × (5)


= 10000 kg m/s


(b) m = 0.2 kg


v = 400 m/s


p = (0.2) × (400)


= 80 kg m/s


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