Why does the force of gravity do no work on a hockey puck sliding across the ice into the goal? Make sure to include the words force, gravity, work and motion in your audio response, very simple 2 sentence question
The force of gravity does no work on a hockey puck sliding across the ice into the goal because work is only done when a force acts on an object and causes a displacement in the same direction as the force. In this case, the force of gravity acts vertically downwards, perpendicular to the motion of the puck, so it does not cause any displacement in the direction of motion and therefore does no work on the puck.
