A block of mass 0.50 kg is moving with a speed of 2.00 m/s on a smooth surface. It strikes another mass of 1.00 kg and then they move together as a single body. The energy loss during the collision is

Options

A. 1.00 J
B. 0.67 J
C. 0.34 J
D. 0.16 J

Answer

B

Explanation

`P_(i)=p_(f)` (momentum conservation)
`rArr 0.5xx2=1.5xxv`
`rArr v=0.67`
energy loss `=1-(1)/(3)=(2)/(3) =0.67 J`