The energy that a piece of food has is transformed when a person's digestive system processes the food. That chemical energy from the food is transformed into many other types of energy. How does the amount of chemical energy of a piece of food compare to the amount mechanical and kinetic energy the person receives once the chemical energy is transformed?

1. The amount of chemical energy is equal to the amount of mechanical and kinetic energy.

2. The amount of chemical energy is less than the amount of mechanical and kinetic energy

3. The amount of chemical energy is more than the amount of mechanical and kinetic energy

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.