Which activity best shows work being done? An apple hanging from a tree.

A ball rolling across the ground.

A book sitting on a shelf.

A car parked in a driveway.

Aplayer uses a hockey stick to push a puck at a constant velocity across the ice. the weight of the puck is 170 n. the coefficient of friction is 0.0600. with what force must the player push the puck so that his force just equals the frictional force? 28.3 n 0.999 n 0.102 n 0.0104 n