A car is traveling at 18.0 km/hr when its driver accelerates uniformly at 10.0 m/s2. When the driver is finished accelerating, the car is traveling at 57.7 km/hr.
How long did the acceleration last?
1
Expert's answer
2013-09-03T13:50:46-0400
velocity change is 57.7 km/hr - 18.0 km/hr = 39.7 km/hr = 11.03 m/s then, acceleration lasts 11.03 m/s / 10.0 m/s2 = 1.103 seconds
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