Question

Two masses 1 gram and 4 gram are moving with equal kinetic energies the ratio of the magnitude of their momenta is

Answer 1

KE = 1/2mvsquare

1/2(0.001)v1square = 1/2(0.004)v2square

Root(V1square/v2square) = 4

V1square/v2square = 2

P = mv

M1v1/m2v2 = 0.004×v1/0.001×v2

= 4×2

= 8

Hence 8:1