Question

Question 13

Consider Newton's 3rd law of motion; which of the following best explains why a runner able to accelerate
to run?
a
b
C
Od
The striking foot pushes backward against the ground. The friction with the ground provides an equal and o
Runners are always at a fixed velocity, there is no acceleration.
When the runner's body leans forward, this causes the body to accelerate.
The foot that is not touching the ground, moves the entire body as it swings forward to step.

Answer 1

The runner's striking foot pushes backward against the ground, as explained by Newton's 3rd law of motion, allowing the runner to accelerate and run.

Step-by-step explanation:

The correct answer is: The striking foot pushes backward against the ground. When a runner is able to accelerate and run, Newton's 3rd law of motion comes into play. According to this law, for every action, there is an equal and opposite reaction. When the runner's striking foot pushes backward against the ground, the ground exerts an equal and opposite force forward on the foot. This force propels the runner forward and allows them to accelerate and run.

For example, when you push against a wall, the wall pushes back with an equal amount of force. Similarly, when a runner pushes against the ground, the ground pushes back with an equal force, propelling the runner forward.

Learn more about Newton's 3rd law of motion