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9 February, 10:08

A car traveling west in a straight line on a highway decreases its speed from 30.0 meters per second to 23.0 meters per second in 2.00 seconds. The Cars average acceleration during the time interval. is

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  1. 9 February, 13:30
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    Acceleration, a = (v - u) / t

    Initial Velocity, u = 30 m/s

    Final Velocity, v = 23 m/s

    time t = 2.00 seconds

    a = (23 - 30) / 2

    a = - 7 / 2 = - 3.5 m/s2

    So the acceleration is negative, which means it is a deceleration of 3.5 m/s2.
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