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tankster tankster
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7 years ago
An object of mass m moving in a certain direction has a kinetic energy of 4.0 J. It hits a wall and comes back with half its original kinetic energy. If the speed of the object on return is 2.0 m/s, what is the mass of the object?
A) 2.0 kg
B) 2.8 kg
C) 3.8 kg
D) 1.0 kg
E) 4.0 kg
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Physics

Physics


Edition: 4th
Author:
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Raj.SRaj.S
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tankster Author
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7 years ago
this is exactly what I needed
fxinternational
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Yesterday
Helped a lot
dedricgard
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2 hours ago
Thanks
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