If gravity is the only force present, what is the total mechanical energy of a glass of milk falling off a table at a time when its po

Question

If gravity is the only force present, what is the total mechanical energy of a
glass of milk falling off a table at a time when its potential energy is 15 J and
its kinetic energy is 12 J?
A. -3J
B. 15 J
C. 27 J
D. 12 J

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Hải Đăng 1 week 2021-07-22T10:03:15+00:00 1 Answers 3 views 0

Answers ( )

    0
    2021-07-22T10:04:30+00:00

    Answer:

    27 J

    Explanation:

    1. The equation for ME is PE + KE

    2. Therefore 15J + 12J = 27J

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Giải phương trình 1 ẩn: x + 2 - 2(x + 1) = -x . Hỏi x = ? ( )