How much power is used by car when it applies 40,000 J of work over a 5.6 second interval

Question

How much power is used by car when it applies 40,000 J of work over a 5.6 second interval

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bonexptip 3 years 2021-08-08T12:58:07+00:00 1 Answers 10 views 0

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  1. giabao
    0
    2021-08-08T12:59:21+00:00
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    Answer:

    7142.86W

    Explanation:

    Given parameters:

    Work done by brake  = 40000J

    Time taken = 5.6s

    Unknown:

    Power used by car  = ?

    Solution:

    Power can be defined as the rate at which work is done. It is mathematically expressed as;

            Power = \frac{work done }{time taken}

    Now input the variables;

               Power  = \frac{40000}{5.6}   = 7142.86W

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