I know the answer is 1/3, I\'m looking for a reason why, I don\'t need the answe

Question

I know the answer is 1/3, I'm looking for a reason why, I don't need the answer. Please help! A car of mass m is moving at a speed 3v in the left lane on a highway. In the right lane, a truck of mass 3m is moving at a speed v. As the car is passing the truck, the driver notices that the traffic light ahead has turned yellow. Both drivers apply the brakes to stop ahead. What is the ratio of the force required to stop the truck to that required to stop the car? Assume each vehicle stops with a constant deceleration and stops in the same distance x. a) 1/9 b) 1/3 c) 1 d) 3 Please explain answer, thanks.

Explanation / Answer

b) 1/3

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