On a pool table, a ball moving at 20 ft / s hits another ball at rest. After impact. the starting ball deflects 30° and has a velocity of 15 ft / s. The balls have equal masses and are perfectly elastic, calculate the speed of the second ball after impact.
On a pool table, a ball moving at 20 ft / s hits another ball at rest. After impact. the starting ball deflects 30° and has a velocity of 15 ft / s. The balls have equal masses and are perfectly elastic, calculate the speed of the second ball after impact.
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Transcribed Image Text:On a pool table, a ball moving at 20 ft / s hits another
ball at rest. After impact. the starting ball deflects 30°
and has a velocity of 15 ft / s. The balls have equal
masses and are perfectly elastic, calculate the speed
of the second ball after impact.
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