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KATRIN_1 [288]
3 years ago
13

Will give brainlist

Physics
1 answer:
Aleks [24]3 years ago
5 0

Answer:

Yes

Explanation:

There was a force, 500 lb.

and a motion in the direction of the force, in this case a negative direction.

Therefore the lifter did negative work on the mass of the  barbell against gravity.

Gravity would do positive work against the mass of weight when the lifter lowers the barbell as the force vector and the motion vector are in the same direction.

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