If two objects A (m 10 kg) and B (m 20kg) have the same momentum, what can be said about their kinetic energies 

1). Total kinetic energy is zero 

2). KE and momentum have no relation at all 

3). KE of A is three times that of B 

4). KE of A is twice that of B 

5). KE of A is equal to that of B
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