Question

When a high jumper leaves the ground, where does the force which throws the jumper upwards come from?​

Answer 1

Answer:

Muscular force

Explanation:

when a person jumps from the ground he gets his energy from his inside which is a muscular energy when he jumps his muscles contract and relax continuously giving him the upward force which help to make a the potential energy which then converts into the kinetic energy when he comes down as potential energy decreases when the height decreases and kinetic energy increases which push the person in air makes him/her jump.

Answer 2

Explanation:

When a high jumper leaves the ground, the source of the upward force that accelerates her is from the ground. She used Newton's third law: objects exert equal and opposite forces on each other. She pushed on the ground, which caused the ground to push her up.

After her feet are off the ground, she is still acted upon by Earth's gravitational force.