7. An object has 25 J of kinetic energy and 15 J of potential energy. Work is done on the object leaving it with 25 J of kinetic energy

Question

7. An object has 25 J of kinetic energy and 15 J of potential energy. Work is done on the
object leaving it with 25 J of kinetic energy and 30 J of potential energy. How much work
is done on the object?​

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Thành Công 3 years 2021-08-15T04:16:32+00:00 1 Answers 21 views 0

Answers ( )

  1. Helga
    0
    2021-08-15T04:18:19+00:00
    Reply

    Answer:

    15 J

    Explanation:

    Total energy before work will be from the sum of both kinetic and potential energy hence 25+15=40 J

    Similarly, the total energy after work will be given by the sum of kinetic and potential energy. This will be 25+30=55 J

    The difference of the two gives the amount of work done hence 55-40=15 J

    Therefore, work done which is as a result of energy increase in the system is equivalent to 15 J

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