Question

A force *F* is required to push a crate along a rough
horizontal floor at a constant speed *V* with friction
present. What force is needed to push the crate along the same
floor at a constant speed *2V* if friction is the same as
before?

1) A force that gradually increases from *F* to
2*F* is needed.

2) No force is needed since the crate has no acceleration.

3) A constant force 2*F* is needed.

4) A constant force *F* is needed.

5) A constant force 1/2*F* is needed.

Answer #1

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Group of answer choices
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18.
A 34.5 kg box initially at rest is pushed 5.75 m along a rough,
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___J
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___J
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___J
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