### What are speed and direction of the ball after the collision

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##### Reference no: EM134385

Question1

A 30-kg girl is bouncing on a trampoline. Throughout a certain interval after leaving surface of the trampoline, her kinetic energy decreases to 220 J from 410 J. How high does she rise during this interval? Neglect air resistance.

Question2

One billiard ball is shot east at 1.8. A second, identical billiard ball is shot west at 1.2. The balls have a glancing collision, not a head-on collision, deflecting second ball by 90 and sending it north at 1.39 .What are speed and direction of the first ball after the collision? What is direction of the first ball after the collision? Provide the direction as an angle south of east.

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