C. The person's feet push backward on the sidewalk; the sidewalk pushes forward on the person.
This is due to our kick back motion forced on the sidewalk when we walk, and the resistance of us walking on it createsa push forward.
Hope this helps!
Protons have a positive energy charge, while neutrons have a neutral charge
Answer:
A
Explanation:
The answer would be A because when feet push down on anything, the force will push down the skateboard
