Question

A cue ball (mass = 0.140 kg) is at rest on a frictionless pool table. The ball is hit dead center by a pool stick, which applies an impulse of +1.40 N · s to the ball. The ball then slides along the table and makes an elastic head-on collision with a second ball of equal mass that is initially at rest. Find the velocity of the second ball just after it is struck. m/s

Answer #1

7

A cue ball (mass = 0.170 kg) is at rest on a frictionless pool
table. The ball is hit dead center by a pool stick, which applies
an impulse of +1.20 N · s to the ball. The ball then slides along
the table and makes an elastic head-on collision with a second ball
of equal mass that is initially at rest. Find the velocity of the
second ball just after it is struck.
? m/s

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° (from the original line of motion)
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°
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cue ball
m/s
target ball
m/s

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