# Answer to Question #34519 in Electric Circuits for Trace

Question #34519

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?

How long did the acceleration last?

Expert's answer

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

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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