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A light and a heavy object have the same momentum. Find out the ratio of their kinetic energies. Which one has a larger kinetic energy?

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asked Oct 16, 2017 in Physics by jisu zahaan (28,760 points) ● 26 ● 374 ● 807

A light and a heavy object have the same momentum. Find out the ratio of their kinetic energies. Which one has a larger kinetic energy?

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answered Oct 16, 2017 by sforrest072 (157,439 points) ● 60 ● 409 ● 933
edited Oct 17, 2017 by sforrest072

Which one has a larger kinetic energy

p1 = m1 v1         p2 = m2 v2

but p1 = p2 or m1 v1 = m2v2

if m1 <  m2  then  v1 >  v2

(K.E)1 = 1/2 (m1 v1)2                      (K.E)2 = 1/2(m2 v2)2

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