A runner who reaches the finish line must continue running for some time
Answer:
A. Law of inertia
The runner will not stop suddenly and abruptly after reaching the finish line since it requires a lot of force for the moving object to stop suddenly and it may cause damage to the athlete.
Allowing the speed to slows down by applying friction and brakes using the muscles decreases the inertia of motion and as time pass by you need little force to stop. These will also regulate body changes heart beat, blood pressure, etc as it adapts to changes in the bodies action.
Law of inertia states that:
An object at rest will remain at rest
unless acted upon by a net force. An object moving will continue moving unless acted upon by net force.
