Part A A 36 kg ball with a velocity of 3.8 m/s in the +z-direction collides head

Question

Part A A 36 kg ball with a velocity of 3.8 m/s in the +z-direction collides head-on elastically with a stationary 2.5 kg ball. What is the speed of the first ball after the collision? Express your answer using three significant figures. m/s Submit My Answers Give Up Incorrect; Try Again; 9 attempts remaining Part B What is the direc tion of the vetocity of the first bail ater toe olsion? What is the direction of the velocity of the first ball after the collision? +z-direction a-direc tion My Answers Giv Dp Free online scientific notation calculator Functions include math expre

Explanation / Answer

v1' = 2 m1 v1 + ( m2 v2 ) / (m1 + m2) - v1

v2 = 0

v1' = [ (2 * 3.6 * 3.8 ) / (3.6 + 2.5)] - 3.8

= 0.685 m/s

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v2' = 2 m1 v1 + (m2 v2) / (m1 + m2) - v2

=(2 * 3.6 * 3.8 ) / (3.6 + 2.5)

= 4.48 m/s

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