The electric motor of a model train accelerates the train from rest to 0.620 m/s in 21ms. The total mass of the train is 825 g. find the ave

Question

The electric motor of a model train accelerates the train from rest to 0.620 m/s in 21ms. The total mass of the train is 825 g. find the average power delivered to the train during its acceleration.

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Jezebel 2 months 2021-07-23T02:45:01+00:00 1 Answers 4 views 0

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    2021-07-23T02:46:59+00:00

    Explanation:

    Average power = change in energy / change in time

    P = ΔE / Δt

    P = (½ mv²) / t

    P = (½ (0.825 kg) (0.620 m/s)²) / (0.021 s)

    P = 7.55 Watts

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