Question

(a) A constant 20 N force pushes a small ball in the direction of the force...

(a) A constant 20 N force pushes a small ball in the direction of the force over a distance of 5.0 m. What is the work done by the force?
(b) A toy cart is pulled a distance of 6.0 m in a straight line across the floor. The force pulling the cart has a magnitude of 20 N and is directed at 37° above the horizontal. What is the work done by this force?
(c) A sled plus passenger with total mass 50 kg is pulled 20 m across the snow (μk = 0.20) at constant velocity by a force directed 25° above the horizontal. Calculate the work of the applied force, the work of friction, and the total work.

Science   Advanced-Physics   
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