A ball moving at strikes and sticks to a block initially at rest on a frictionless surface

PHYSICS · Single correct · CBSE · Physics · Work, Energy and Power · Work, Energy and Power

Problem

0.5\,\text{kg}

ball moving at

4\,\text{m\,s}^{-1}

strikes and sticks to a

1\,\text{kg}

block initially at rest on a frictionless surface. What percentage of the system’s initial kinetic energy is lost in the impact? (a)

75\%

(b)

67\%

(c)

33\%

(d)

50\%