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27 February, 01:01

A 4.00 kg stone is dropped from a height of 145 m. What is the stone's potential and kinetic energy respectively when it is 50.0 m from the ground?

A - 1,960 J, 5,680 J

B - 5,680 J, 1,960 J

C - 3,720 J, 1,950 J

D - 1,960 J, 3,720 J

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Answers (1)
  1. 27 February, 02:24
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    C - 3,720 J, 1,950 J

    Explanation:

    Hello

    Epotential = M*G*H

    Ep = (4) (9.8) (145-50)

    Ep = 3729 J

    Then

    Ec = 1950 J

    Best regards
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