Eli is experimenting with two balls of the same mass. If Eli wants to move both balls so that the first ball has a greater change in motion, what could he do?

Question

A
Push the second ball with a greater force.

B
Push the first ball with a greater force.

C
Push both balls with the same force.

D
None of the above

Answer 1

To achieve a greater change in motion (which can be interpreted as a greater change in velocity) for the first ball, Eli should push the first ball with a greater force compared to the second ball. According to Newton's second law of motion (F = ma), a greater force will result in a greater acceleration (and thus a greater change in velocity) for the same mass.

Therefore, the correct answer is:

B Push the first ball with a greater force.