Anya lifts a ball high above her head and drops it. the ball bounces up and down. she observes that the ball loses height every time it bounces. how can this situation be explained? a. some of the ball’s energy changes to thermal energy when it hits the ground. b. the ball loses some of its energy to the force of gravity. c. there’s no air resistance (drag) on the ball. d. the mass of the ball changes with each bounce.

chemical energy --> gravitational potential energy --> kinetic energy --> elastic potential energy --> gravitational potential energy

explanation:

when emma starts the hike, the chemical energy stored in her body is used to climb up the mountain, and so she gains gravitational potential energy (because at the end, she will be at a higher height h above the ground). then she goes bungee jumping: as she falls, this gravitational potential energy is converted into kinetic energy (because her speed increases as she falls down), until the point when the rope stretches, and she stops moving. at that moment, all the kinetic energy is converted into elastic potential energy due to the stretching of the rope. then, this energy is released because the rope returns to its natural length, and emma gains a small increase in altitude , so she gains some gravitational potential energy.

2b2t

explanation:

2b2t