Question

during the last 40 meters down the hill, the skier turned her skis sideways in order to slow down as she approached the bottom of the hill. did the ke and pe increase, decrease, or stay the same

Answer 1

ANSWER

Both PE and KE decrease

EXPLANATION

As the skier is going downhill - i.e. decreasing her height relative to the ground, the potential energy decreases because it depends directly on the height of the body in motion. Also, it is said that she is using her skis to slow down, so her velocity is decreasing, and therefore, her kinetic energy is decreasing as well.