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28 February, 00:12

A 878-kg (1940 lb) dragster, starting from rest, attains a speed of 25.9 m/s (57.9 mph) in 0.62 s. (a) Find the average acceleration of the dragster during this time interval?

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  1. 28 February, 00:28
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    41.8m/s^2

    Explanation:

    Since the dragster starts from rest, initial velocity (u) = 0m/s, final velocity (v) = 25.9m/s, time (t) = 0.62s

    From the equations of motion, v = u + at

    a = (v - u) / t = (25.9 - 0) / 0.62 = 25.9/0.62 = 41.8m/s^2
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