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A 4 kg mass and 1 kg are moving with equal kinetic energies. The ratio of the magnitudes of their linear momenta is
(a) 1: 2
(b) 1: 1
(c) 2: 1
(d) 4: 1
(c)
E = mv2. Hence, mv = (2mE)1/2.
For same KE
momentum is proportional to sqrt mass
Hence, the ratio is 2:1.
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