Work and Energy

Work, Power, Energy Multiple Choice
PSI Physics

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Multiple Choice Questions

1.

A block of mass m is pulled over a distance d by an applied force F which is directed in parallel to the displacement. How much work is done on the block
by the force F?
A. mFd
B. zero
C. Fd
D.
E. –Fd

2.

A block of mass m is moved over a distance d. An applied force F is directed perpendicularly to the block’s displacement. How much work is done on the
block by the force F?
A. mFd
B. zero
C. Fd
D.
E. –Fd

3.

A block of mass m is moved over a distance d. An applied force F is opposite to the block’s displacement. How much work is done on the block by the force
F?
A. mFd
B. zero
C. Fd
D.
E. –Fd

4.

A truck driver is trying to push a loaded truck with an applied force. Unfortunately, his attempt was unsuccessful the truck stays stationary no matter how
hard the driver pushes. How much work is done by the driver?
A. Fd

B. –Fd

C.

D.

E. Zero

5.

A spacecraft moves around Earth in a circular orbit with a constant radius. How much work is done by the gravitational force on the spacecraft during one
revolution?
A. FGd
B. - FGd
C. mgh
D. ½ mv2 E. zero

6.

A construction worker holds a heavy tool box. How much work is done by the worker?
A. FGd
B. - FGd
C. mgh
D. ½ mv2
E. zero
A container with a mass of 5 kg is lifted to a height of 8 m. How much work is done by the gravitational force?
A. 400 J
B. -400 J C. zero
D. 50 J
E. -50J

7.

8.

A container with a mass of 5 kg is lifted to a height of 8 m. How much work is done by the external force?
A. 400 J
B. -400 J C. zero
D. 50 J
E. -50J

9.

A container with a mass of 5 kg is lifted to a height of 8 m and then returned back to the ground level. How much work is done by the gravitational force?
A. 400 J
B. -400 J C. zero
D. 50 J
E. -50J

10. An object is thrown straight up. Which of the following is true...