Describe 2 situations which show that a FORCE may cause a change of:?

Question

i) shape of a body.

ii) motion of a body.

Answer 1

i) shape of a body:

You squeeze a tennis ball and its shape changes.

ii) motion of a body:

You hit a moving tennis ball with your racket, and its direction & speed change.

"2. What is the advantage of a broader seatbelt compared to a narrow seatbelt in a car crash?"

A wider seat belt will spread out its impact force over a greater area of your body; a narrower seat belt would apply a greater force over a smaller area.