11-08-2014
Physics

Answered

a car moving at 25 m/s speeds up to 47m/s. it takes 9 seconds to do this.what is the acceleration of the car?

Answer :

11-08-2014

Acceleration = (change in speed) / (time for the change)

Change in speed = (47 - 25) = 22 m/s

Acceleration = 22 / 9 = 2 and 4/9 m/s²

(Roughly 1/4 of a 'G '.)

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