Which one of the following statements is NOT correct regarding impulse and safety devices?
PHYSICS · Single correct · A Level · Physics · Mechanics and materials · Mechanics and materials
Problem
Which one of the following statements is NOT correct regarding impulse and safety devices?
(a) Car airbags function by increasing the time over which passengers come to rest.
(b) For a fixed change in momentum, doubling the stopping time doubles the average force.
(c) Helmets lessen the peak force on the head by providing cushioning.
(d) For a fixed change in momentum, increasing the stopping time lowers the average force.