A ice puck slides due east and strikes an identical puck at rest

PHYSICS · Single correct · AP · Physics 1: Algebra-based · Linear Momentum · Linear Momentum

Problem

0.15\,\text{kg}

ice puck slides

3.0\,\text{m/s}

due east and strikes an identical puck at rest. After the collision the two pucks travel in directions that differ by

90^\circ

. If the first puck continues at

2.0\,\text{m/s}

, what is the speed of the second puck? (a)

3.0\,\text{m/s}

(b)

2.6\,\text{m/s}

(c)

2.2\,\text{m/s}

(d)

1.0\,\text{m/s}