A smooth puck P slides on a frictionless horizontal table with speed directed above…

PHYSICS · Subjective · AP · Physics 1: Algebra-based · Linear Momentum · Linear Momentum

Problem

0.20\,\text{kg}

smooth puck P slides on a frictionless horizontal table with speed

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

directed

30^{\circ}

above the positive

x

–axis. It strikes an identical puck Q that is at rest. At the instant of impact the line of centres is along the

x

–axis and the coefficient of restitution is

0.6

. Calculate the

x

–component of velocity of puck P immediately after the impact.