A model car crashes into a foam safety barrier and comes to a complete stop, as shown in the diagram below.
The momentum of the model car just before it hits the foam barrier is 12.4 kg m/s.
The model car comes to rest 0.16 s after first making contact with the barrier.
Calculate the magnitude of the average force exerted by the barrier on the model car.
Use the equation:
force=change in momentumtime taken \text{force} = \frac{\text{change in momentum}}{\text{time taken}} force=time takenchange in momentum