A pendulum, shown here, is swinging back and forth without a…

A pendulum, shown here, is swinging back and forth without any friction in the system. Image Description A diagram of a pendulum swinging with locations marked. Point A is when the pendulum is on the far left. Point C is when the pendulum is at the bottom of its arc. Point B is in the middle of point A and point C. Use this pendulum to answer the next two questions.

In the following questions a beginning skier starts standing…

In the following questions a beginning skier starts standing still at the top of a run. He then starts down the hill speeding up as he goes. When he is going as fast as he wants, he angles his skis (snowplows), keeping his speed constant. Finally, he reaches a flat, level portion of snow at the bottom of this run.