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## Test 3.2

,Created page with "2. If two bodies of equal masses move with uniform velocity of 'v' and '3v', what will be the ratio of their kinetic energies? Solution: Mass of first body = m Velo..."

2. If two bodies of equal masses move with uniform velocity of 'v' and '3v', what will be the ratio of their kinetic energies?

Solution: Mass of first body = m

Velocity of the first body = v

Mass of second body = m

Velocity of second body = 3v

The ratio of kinetic energies of the two bodies = (kinetic energies of first body)/(kinetic energies of second body)

=((1/2)mv2)/((1/2)m(3v)2)

=1/9

Therefore the ratio of the kinetic energies = 1:9

Solution: Mass of first body = m

Velocity of the first body = v

Mass of second body = m

Velocity of second body = 3v

The ratio of kinetic energies of the two bodies = (kinetic energies of first body)/(kinetic energies of second body)

=((1/2)mv2)/((1/2)m(3v)2)

=1/9

Therefore the ratio of the kinetic energies = 1:9