Question

Why are football players and cyclists encouraged to frequently purchase new helmets? (1 point)
Responses

because the foam in the helmet becomes less absorbent over time
because the foam in the helmet becomes less absorbent over time

because the hard plastic that covers the foam forms many small cracks over time
because the hard plastic that covers the foam forms many small cracks over time

because the helmet will no longer experience an equal and opposite force during impact
because the helmet will no longer experience an equal and opposite force during impact

because the foam in the helmet slightly expands and gets filled with air

Answer 1

because the foam in the helmet slightly expands and gets filled with air