Friction and energy conversion
Jim is driving a 2268-kg pickup truck at 20 m/s and releases his foot from the accelerator pedal. The car eventually stops due to an effective friction force that the road, air, and other things exert on the car. The friction force has an average magnitude of 800 N. (a) Make a list of the physical quantities you can determine using this information and determine three of them. Specify the system and the initial and final states. (b) Would a heavier car travel farther before stopping or stop sooner? Identify the assumptions in your answer.
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