1.)What is true about the work done by friction? A.) It is always negative B.) I

ID: 2294378 • Letter: 1

Question

1.)What is true about the work done by friction?

A.)It is always negative

B.)It does work only on an inclined plane.

C.)It is perpendicular to the direction of motion.

D.)It is always positive

2.)What is true about the work done by gravity?

A.) Always negative

B.) Always positive

C.)Negative when going up but positive when going down.

D.)Positive when going up but negative when going down.

3.)What is true about the relationship between work, force and displacement?

A.)Work is the product of the force and the displacement.

B.)Work is the area under the curve of the force versus displacement graph.

C.)Work will be negative if the force points opposite to the displacement.

D.)All of these statements are true.

4.)Forces applied to springs have what properties?

A.)Applied forces are proportional to the displacement times a constant.

B.)Applied forces are constant

C.)Applied forces are the product of the work done times the displacement squared.

D.)All of these statements are properties of springs.

1) it is always negative

2)negative when going up but positive when going down..

3)D.)All of these statements are true

4)Applied forces are proportional to the displacement times a constant.

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