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Assoli18 [71]
3 years ago
7

A hand lifts a block vertically upward at constant velocity. The work done by gravity on the block ____ if the system consists o

f the block only.AND WHY?
a) is zero,
b) is zero/is zero,
c) is negative/is zero,
d) is positive/is negative,
e) is negative/is positive,
f) is positive
Physics
1 answer:
diamong [38]3 years ago
8 0

Answer:(e)

Explanation:

If block is raised vertically upward then work done by force F to height h is given by

W_F=F\cdot .h

W_F=Fh

Work done by gravity will be equal and opposite to the work done by force F as object is moving with constant velocity i.e. net force on object is zero.

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Question number 11 how did we found the answer ?
BaLLatris [955]

Answer:

Option A. 57.14 Ω

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