Question

A billiard ball that weighs about 0.50 kg slides without rolling along a frictionless surface at a velocity of 3.5 m/s. It hits a stationary billiard ball of the same mass. After the collision, the first ball is redirected 45 degrees to the west side of its initial direction, while the second ball is redirected 45 degrees to the east side of the first ball’s initial direction. Both balls have the same speed after the collision, and both slide without rolling.Find the speed of either ball. If the first billiard ball had been rolling instead of just sliding, explain how that might change your answer above.

Answer #1

One billiard ball with a mass of 0.50 kg is shot east at 2.5
m/s. A second billiard ball with a mass of 0.25 kg is shot west at
2.0 m/s. The balls have a glancing collision, not a head-on
collision, deflecting the first ball by 90° and sending it north at
1.0 m/s.
What are the speed of the second ball after the collision?
What is the direction of the second ball after the collision?
Express your answer as...

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a) what is the speed of the first ball after the collision?
b)what is the direction of the first ball after the collision?

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billiard ball is shot west at 0.80 m/s . The balls have a glancing
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90∘ and sending it north at 1.34 m/s .
What is the speed of the first ball after the collision?
What is the direction of the first ball after the collision?
Give the direction as an angle south of east.

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___________ m/s, ___________ ° south of east

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collision?

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