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Answer to Question #16521 in Mechanics | Relativity for ErinDona

Question #16521
a 6 kg cart on a level surface is pulled at a constant velocity of 2 m/s by a constant force of 10 N. What is the friction force opposing the motion?
Expert's answer
As the velocity of a cart is constant (i.e. acceleration is equal to zero), the friction force is equal to the pulling force. Therefore, friction force has a magnitude of 10 N.

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