Two friends wearing frictionless rollerskates are facing each other within arm's reach. Jimi pushes gently on his friend Tony's upraised palms. What happens?
Since Jimi's friend Tony is wearing frictionless rollerskates, his feet will not provide any resistance against the force applied by Jimi. Therefore, when Jimi pushes gently on Tony's upraised palms, Tony's body will experience a force in the opposite direction. As a result, Tony will start to move backward due to the force exerted by Jimi. Since Tony has no way to grip the surface or apply any opposing force to stop his movement, he will continue to move backward until an external force stops him.
