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March 27, 2015

Homework Help: PHYSICS HELP-multiple choice

Posted by Sarah on Wednesday, October 31, 2012 at 11:01pm.

A red ball with a velocity of +3.0 m/s collides head-on with a yellow ball of equal mass moving with a velocity of
-2.0 m/s. What is the velocity of the red ball after the collision?
A. zero.
B. -2.0 m/s.
C. +3.0 m/s.
D. +2.5 m/s.
E. +5.0 m/s.

I think zero but need a second opinion PLZ!! =)

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