a car traveling at 30 m/s starts to decelerate steadily. it comes to a complete stop in 12 seconds. what is its acceleration?
1 answer:
Just divide -30 m/s (the change in velocity) by 12 seconds (the time required for the car to come to a stop): -30 m/s ----------- = - 2,5 m / (sec)^2 (answer) 12 sec
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