Question

A group of extraterrestrial athletes travel from the Moon to Earth to train.

How would the amount of force they exert to move change on Earth?

(1 point)
Responses

The force needed would be less, so they would perform at a higher level.
The force needed would be less, so they would perform at a higher level.

The force would be the same.
The force would be the same.

The force would need to be greater, so they would not perform as well.
The force would need to be greater, so they would not perform as well.

The force needed to move on the Earth is less than the force needed to move on the moon.
The force needed to move on the Earth is less than the force needed to move on the moon.

Answer 1

The force would need to be greater, so they would not perform as well.

Explanation: Earth’s gravity is stronger (about 6× the Moon’s), so their weight and frictional forces increase and they must push/pull harder to achieve the same motions (jump, start/stop, etc.).