Aball with a mass of 0.5 is lifted to a height of 2.0 meters and dropped. it bounces back to a height of 1.8 meters.

the energy of the ball has been reduced by (0.98, 8.82, 9.8) joules after bouncing back. this reduction happens because potential energy transforms to (kinetic, light, thermal) energy

To practice problem-solving strategy 10.1 for energy conservation problems. a sled is being held at rest on a slope that makes an angle θ with the horizontal. after the sled is released, it slides a distance d1 down the slope and then covers the distance d2 along the horizontal terrain before stopping. find the coefficient of kinetic friction μk between the sled and the ground, assuming that it is constant throughout the trip.