Puck A ( ) slides on ice at toward stationary puck B ( )

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

Problem

Puck A (

0.20\,\text{kg}

) slides on ice at

3.0\,\text{m/s}

toward stationary puck B (

0.30\,\text{kg}

). They undergo a one-dimensional elastic collision. Immediately afterward, puck B collides and sticks to stationary puck C (

0.50\,\text{kg}

). What percentage of puck B’s kinetic energy just before the second collision is lost during that perfectly inelastic collision? (a)

38\%

(b)

67\%

(c)

63\%

(d)

84\%