Question

When you take off in a jet aircraft, there is a sensation of being pushed back into the seat. explain why you move backward in the seat—is there really a force backward on you? (the same reasoning explains whiplash injuries, in which the head is apparently thrown backward.)?

Answer 1

Answer:

Newton's third law of motion

Explanation:

As per Newton's third law of motion, every action has its equal and opposite reaction.

When a jet aircraft takes off it exerts a force and gains upward acceleration, the same force is applied on your body as it is moving along the jet hence this force tries to push you back into the seat.

For instance, while rowing a boat you try to apply force on water with paddles in backward direction, the same amount of force is reverted by water thus moving the boat in forward direction.

Hence Newton's third law of motion explains the phenomena.

Answer 2

I believe the correct answer to this is: No, there is no force pushing you backward.

 

In this case, since the jet is pushing forward hence the person is also actually feeling the seat of the jet pushing forward. Due to Newton’s 3rd law, the person exerts an equal force back onto the seat causing him to lean backward.