A 50kg driver sits stopped at a traffic light. Another car rear-ends her and cau

Question

A 50kg driver sits stopped at a traffic light. Another car rear-ends her and causes her to accelerate at 16m/s^2.  It all occurs in 0.25s.

a) What is the impulse given to the driver?  

b) What is the average force exerted on the driver and what exerts the force?

A 50kg driver sits stopped at a traffic light. Another car rear-ends her and causes her to accelerate at 16m/s^2. It all occurs in 0.25s. What is the impulse given to the driver? What is the average force exerted on the driver and what exerts the force?

Explanation / Answer

a) impulse = m dv = 50* (16*0.25)= 200

b) F = dp/dt = 200/0.25 = 800 N

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