Mitchell Pickens: Conservation Of Momentum Definition
Woodrow Neyman: Objects in motion stay in motion, and objects at rest stay at rest unless acted upon by an outside force. Momentum is neither gained nor lost, only transferred. When a ball crashes into a foam wall, it slows down. The rule of conservation of momentum states that the energy did not suddenly disappear, but instead was transferred into the foam wall, and lost with friction. This is why cars with higher crumple zones are rated safer. The only reason a ball that is set rolling on a floor does not stay rolling forever is that an outside force, friction, is acting upon it to slow it down and its momentum is being transferred into the air and the floor....Show more
Lyman Gauld: Being lazy.
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