Question

Two bodies have equal mass. However the speed of the 1 bidy is twice the speed if the other body. What is the ratio of kinetic energy of the two bodies?​

Answer 1

Answer:

Let, mass =  m (both )

1st body velocity = v

2nd body velocity = 2v

( 1st ) = 1/2mv²

( 2nd ) = 1/2m( 2v )² = 2mv²

( 1st )/( 2nd ) = ( 1/2mv² )/( 2mv² )

( 1st ) : ( 2nd ) = 1 : 4

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Answer 2

Answer:

The ratio of their kinetic energies is 4 : 1 or 1 : 4.