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Answer on Mechanics | Relativity Question for Allie

Question #6375
A 6 Kg cart on a level surface is pulled at a constant velocity of 2 m/sec by a constant force of 10 N. What is the acceleration? What is the friction force opposing the motion?
Expert's answer
As the car is pulled at a constant velocity, the acceleration and vector sum of the forces acting on the car equals to zero.
Thus a = 0; F - Ffrict = 0; Ffrict = 10 N.

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