Question

Which explanation describes the forces involved for a person to walk down the sidewalk?

Answer 1

The person walking down the sidewalk follows the newton's third law of motion.

Explanation:

• A person is able to walk down the sidewalk by using the reaction forces from the ground.
• In simple term, feet pushes the ground and the reaction forces makes the feet able to walk.
• Another important force included in the walking mechanism is friction. With out friction one cannot walk down the sidewalks.
• Hence the forces involved in the walking of a person down the sidewalk are:

1. Friction force
2. Action and reaction force between ground and person's feet.