Question

find the momentum of a body of mass hundred grams having the kinetic energy as 20Jouls.

Answer 1

Given:- mass = 100 gm = 0.1 kg
K.E. = 1/2mv^2
= 20 * 2 = m.v^2
so, v = 20 m/s.
so, momentum = mass * velocity
momentum = 0.1 * 20 = 2 kg. m/s.

Answer 2

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