A car travels at a speed of 12m/s and slows to a stop in 4s. What was the car's acceleration

A car travels at a speed of 12m/s and slows to a stop in 4s. What was the car's acceleration

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1 Answer

Assuming a constant deceleration, which is the rate of change of speed, the car loses 12/4=3m/s every second. Therefore the acceleration is -3m/s/s.

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