As part of a safety investigation, two 1900 kg cars traveling at 17 m/s are crashed into different barriers.
Part A. Find the average force exerted on the car that hits a line of water barrels and takes 1.3 s to stop.
Express your answer to two significant figures and include the appropriate units.
Part B. Find the average force exerted on the car that hits a concrete barrier and takes 0.20s to stop.
Express your answer to two significant figures and include the appropriate units.