PHYSICS 102 HARRIS ISU
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1. A light aluminum ball and a heavy lead ball of the same size are allowed to
roll down an incline. When they are halfway down the incline, they will have
identical
A. kinetic energies.
B. potential energies.
C. momentum.
D. inertias.
E. none of the above choices: E
2. The SI units of work are
A. Calories
B. Kilocalories
C. Joules
D. Watts
E. Newtons: C
3. The SI units of energy are
A. Calories
B. Kilocalories
C. Joules
D. Watts
E. Newtons: C
4. A ball rolling down an incline has its maximum kinetic energy at
A. the top.
B. a quarter of the way down.
C. halfway down.
D. three-quarters of the way down.
E. the bottom.: E
5. The ball rolling down an incline has its maximum potential energy at
A. the top.
B. a quarter of the way down.
C. halfway down.
D. three-quarters of the way down.
E. the bottom.: A
6. A 75 kg man climbs the stairs to the fifth floor of a building, a total height of
16 m. His potential energy has increased by approximately
A. 12000 J
B. 59000 J
C. 47000 J
D. 38000 J
E. 5900 J: A
1/8
, PHYSICS 102 HARRIS ISU
Study online at https://quizlet.com/_4j94uy
7. A 11 kg box is resting on a table 1.1 m above the ground. What is the box's
potential energy in Joules?: 118.6
8. A 63 kg woman riding a bicycle has a speed of 10 m/s at the bottom of the
hill. As she travels up the hill, she does not pedal, and gradually coasts to a
stop. How far in meters (vertically) above the bottom of the hill is she when
she stops? Round your answer to 1 decimal place.: 5.1
9. In the absence of friction, how much work in Joules would a child do while
pulling a 2.8 kg wagon a distance of 5 m with a 8 N force? Round your answer
to 1 decimal place.: 40
10. Running typically burns Calories per mile.
A. 30
B. 50
C. 100
D. 200
E. 500: C
11. The energy stored in one pound of fat is
A. 35 Cal
B. 350 Cal
C. 1000 Cal
D. 3500 Cal
E. 5000 Cal: D
12. True or False: As a box slides along a rough horizontal surface and comes
to rest, its kinetic energy is transformed into potential energy.
A. True
B. False: FALSE
13. Do 100 J of work in 50 s and your power output is
A. 1/2 W
B. 2 W.
C. 4 W.
D. 50 W.
E. 5,000 W.: B
14. A 50-kg sack is lifted 2 meters from the ground and a 25-kg sack is lifted 4
meters from the ground in the same amount of time. The power expended in
raising the 50-kg sack is
A. twice as much.
B. half as much.
C. four times as much
D. one fourth as much
E. the same.: E
2/8
Study online at https://quizlet.com/_4j94uy
1. A light aluminum ball and a heavy lead ball of the same size are allowed to
roll down an incline. When they are halfway down the incline, they will have
identical
A. kinetic energies.
B. potential energies.
C. momentum.
D. inertias.
E. none of the above choices: E
2. The SI units of work are
A. Calories
B. Kilocalories
C. Joules
D. Watts
E. Newtons: C
3. The SI units of energy are
A. Calories
B. Kilocalories
C. Joules
D. Watts
E. Newtons: C
4. A ball rolling down an incline has its maximum kinetic energy at
A. the top.
B. a quarter of the way down.
C. halfway down.
D. three-quarters of the way down.
E. the bottom.: E
5. The ball rolling down an incline has its maximum potential energy at
A. the top.
B. a quarter of the way down.
C. halfway down.
D. three-quarters of the way down.
E. the bottom.: A
6. A 75 kg man climbs the stairs to the fifth floor of a building, a total height of
16 m. His potential energy has increased by approximately
A. 12000 J
B. 59000 J
C. 47000 J
D. 38000 J
E. 5900 J: A
1/8
, PHYSICS 102 HARRIS ISU
Study online at https://quizlet.com/_4j94uy
7. A 11 kg box is resting on a table 1.1 m above the ground. What is the box's
potential energy in Joules?: 118.6
8. A 63 kg woman riding a bicycle has a speed of 10 m/s at the bottom of the
hill. As she travels up the hill, she does not pedal, and gradually coasts to a
stop. How far in meters (vertically) above the bottom of the hill is she when
she stops? Round your answer to 1 decimal place.: 5.1
9. In the absence of friction, how much work in Joules would a child do while
pulling a 2.8 kg wagon a distance of 5 m with a 8 N force? Round your answer
to 1 decimal place.: 40
10. Running typically burns Calories per mile.
A. 30
B. 50
C. 100
D. 200
E. 500: C
11. The energy stored in one pound of fat is
A. 35 Cal
B. 350 Cal
C. 1000 Cal
D. 3500 Cal
E. 5000 Cal: D
12. True or False: As a box slides along a rough horizontal surface and comes
to rest, its kinetic energy is transformed into potential energy.
A. True
B. False: FALSE
13. Do 100 J of work in 50 s and your power output is
A. 1/2 W
B. 2 W.
C. 4 W.
D. 50 W.
E. 5,000 W.: B
14. A 50-kg sack is lifted 2 meters from the ground and a 25-kg sack is lifted 4
meters from the ground in the same amount of time. The power expended in
raising the 50-kg sack is
A. twice as much.
B. half as much.
C. four times as much
D. one fourth as much
E. the same.: E
2/8
