A force of magnitude 25.0 N acting at a 60.0° angle to the horizontal pulls a block 5.00 m along the floor. a) Find the work done on the box: W = 62.5 Joules Now consider if the box experiences a frictional force F, = 5.00 N. b) If the box moved 5.00 m, find the net work done on the box: W = 20 Joules Friction = 5.00 N

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