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October 31, 2014

October 31, 2014

Posted by **Isis** on Tuesday, February 19, 2013 at 9:45pm.

2.) A 3.0 kg ball at 3 m/s and strikes a 1.5 kg ball moving at -2 m/s. After the collision, the 1.5 kg ball moves to the right at 2 m/s. What is the final velocity of 3.0 kg ball?

3.) A 85 kg running back is moving at +12 m/s and strikes a 125 kg linebacker moving at -8.0 m/s. What is the final velocity if they stick together?

Formula: m1vi+m2vi=m1vf+m2vf

:) help me please!!!

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- Physics ~ CONSERVATION OF MOMENTUM ~ -
**bobpursley**, Tuesday, February 19, 2013 at 9:54pm1. the final momentum is (M1+M2)V

2. just do the math.

3. same as 1, if they stick together, final momentum (85+125)V solve for v.

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