Question

Which statement

correctly explains why a non-stretching seat belt better protects a driver than wearing no seat belt at all?
A) A non-stretching seat belt decreases the momentum of the driver
B) A non stretching seat belt increases the inertial motion of the driver
C) A non-stretching seat belt decreases the initial velocity of the driver
D) A non-stretching seat belt increases the stopping distance of the driver.

Answer 1

The task of the seatbelt is to stop you with the car so that your stopping distance is probably 4 or 5 times greater than if you had no seatbelt. A crash which stops the car and driver must take away all its kinetic energy, and the distance and reduce the average impact force on the driver compared to a non-stretching harness.