calculate the potential energy of a 20-kg sled at 40 meters

Question

calculate the potential energy of a 20-kg sled at 40 meters

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Euphemia 3 years 2021-08-02T00:49:56+00:00 2 Answers 73 views 0

Answers ( )

  1. thienthanh
    0
    2021-08-02T00:50:56+00:00
    Reply

    Answer: 7840N

    Explanation:

    Given that

    Potential energy = ?

    Mass of sled = 20-kg

    Distance = 40 meters

    Acceleration due to gravity = 9.8m/s^2

    Recall that potential energy is the energy possessed by a body at rest

    i.e potential energy = mass m x acceleration due to gravity g x distance h

    P.E = mgh

    P.E = 20kg x 9.8m/s^2 x 40m

    P.E = 7840N

    Thus, the potential energy of the sled is 7840N

  2. Delwyn
    0
    2021-08-02T00:51:49+00:00
    Reply

    the above answer is correct however gravitational potential energy is measured in joules. So the final answer would be 7840 J (joules) not newton’s.

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