A block of mass `0.50kg` is moving with a speed of `2.00m//s` on a smooth surface. It strikes another mass of `1 kg` at rest and they move as a single body. The energy loss during the collision is

Options

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

Answer

C

Explanation

Energy loss `= (1)/(2)(m_(1) m_(2))/((m_(1) + m_(2)))(u_(1) - u_(2))^(2)`
`= ((0.5)(1))/(2[0.5 + 1]) (2 - 0)^(2) = (2)/(3) J`