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salonijainnn salonijainnn
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2 months ago

A ball bearing rolls along a smooth horizontal tabletop and crashes head-on into a second, stationary ball bearing of half its mass. If both ball bearings roll in the x-direction only (either positive or negative) and the initially stationary ball is observed to have a velocity of +2.4 m/s after the collision, what is the velocity of the first ball after the collision? Assume the collision is elastic.  



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−2.4 m/s



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+2.4 m/s



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−1.2 m/s



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+1.2 m/s



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−0.6 m/s



▸

+0.6 m/s

Textbook 
College Physics

College Physics


Edition: 5th
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ahgoebelahgoebel
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This helped my grade so much Perfect
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Smart ... Thanks!
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