Question

A jet plane lands on a runway and decelerate so to rest.

What can you say about the direction of the resultant force on the ane as it decelerates?

What can yu say about the resultant force acting on the plane as it has come to rest?

Many thanks.

Answer 1

The force opposing the motion is the braking, because it is deaccelerating, that force is opposite the direction the plane is rolling.

at rest, the only force on the plane is weight (due to gravity), and the force of the ground pushing up (which is equal and opposite direction to gravity force0.

Answer 2

Thanks.