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- 1. Multiple Choice
The sum of the kinetic and potential energy in a system is known as the system's _____________________ energy.
mechanical
chemical
thermal
combined
- 2. Multiple Choice
How much kinetic energy does a baseball with a mass of 0.143 kg have if it is traveling at a velocity of 41.1 m/s?
120.8 joules
89.7 joules
108.3 joules
156.6 joules
- 3. Multiple Choice
A 1.0 kg ball is stationary at the top of a hill that is 10.0 meters in height. The ball rolls all the way down the hill. What is its gravitational potential energy at the bottom of the hill?
0 joule
98 joules
49 joules
38 joules
- 4. Multiple Choice
What is the MECHANICAL energy of the roller coaster car?
100 joules
50 joules
2500 joules
1 joule
- 5. Multiple Choice
This drawing illustrates which of the following?
Conservation of Mechanical Energy
Conservation of Mass
Conservation of Momentum
Conservation of Matter
- 6. Multiple Choice
What was the Kinetic energy of the car at near the bottom of the hill if the car still had 10 J of Potential energy?
10 joules
50 joules
90 joules
500 joule
- 7. Multiple Choice
At which point in the picture must the cart have the most MECHANICAL energy?
Point 1
Point 2
Point 3
They would all be the same
- 8. Multiple ChoiceAt point 1, the pendulum’s PE is 80 J. Which correctly predicts the PE and KE at point 2 if all of the original energy is conserved ?PE =80 J KE=0 JPE=0J KE=80 JPE=50 J KE=30 JPE=30 J KE=50 J
- 9. Multiple Choice
A 50 kg-mass travels around the track. Calculate its kinetic and gravitational potential energies at location 1 if all of its starting gravitational potential energy is conserved.
PE = 1960 J KE = 0 J
PE = 0 J KE = 1060 J
PE = 1470 J KE = 490 J
PE = 1060 J KE = 900 J
- 10. Multiple Choice
A 50 kg-mass travels around the track. Calculate its kinetic and gravitational potential energies at location 2 if all of its starting gravitational potential energy is conserved.
PE = 1960 J KE = 0 J
PE = 0 J KE = 1060 J
PE = 1470 J KE = 490 J
PE = 1060 J KE = 900 J
- 11. Multiple Choice
A 50 kg-mass travels around the track. Calculate its kinetic and gravitational potential energies at location 3 if all of its starting gravitational potential energy is conserved.
PE = 1960 J KE = 0 J
PE = 0 J KE = 1060 J
PE = 1470 J KE = 490 J
PE = 1060 J KE = 900 J
- 12. Multiple Choice
A 50 kg-mass travels around the track. Calculate its kinetic and gravitational potential energies at location 4 if all of its starting gravitational potential energy is conserved.
PE = 1960 J KE = 0 J
PE = 0 J KE = 1060 J
PE = 1470 J KE = 490 J
PE = 1060 J KE = 900 J
- 13. Multiple ChoiceA 3.0-kilogram object is placed on a frictionless track at point A and released from rest. (Assume the gravitational potential energy of the system to be zero at point C.) Calculate the gravitational potential energy of the object at point A.117.6 J58.8 J88.2 J29.4 J
- 14. Multiple Choice
A cliff diver with a mass of 125 kg jumps off a high cliff, at a height of 10 m is moving at 15.5 m/s. What is his total mechanical energy?
13,218.75 J
42,281.25 J
27,265.6 J
13,218.75 J
- 15. Multiple Choice
What happens when the ball goes from the highest position to the lowest position
PE and KE increases and decreases together
PE increases while KE decreases
the PE decreases while KE increases
- 16. Multiple Choice
What is the GPE at point A
14 J
12 J
6 J
8 J
- 17. Multiple Choice
What is the KE at point B?
14 J
12 J
6 J
8 J
- 18. Multiple Choice
What is the Total Mechanical Energy of the system?
14 J
12 J
6 J
8 J
- 19. Multiple Choice
What is the KE at point D?
14 J
12 J
6 J
8 J
- 20. Multiple Choice
What is the GPE at point E?
14 J
12 J
6 J
8 J
- 21. Multiple Choice
What is the Total Mechanical Energy at point A?
500,000 J
400,000 J
200,000 J
50,000 J
- 22. Multiple Choice
What is the Kinetic Energy at point B?
500,000 J
400,000 J
300,000 J
50,000 J
- 23. Multiple Choice
What is the GPE at point E?
500,000 J
250,000 J
300,000 J
100,000 J
- 24. Multiple Choice
What is the GPE at point F?
500,000 J
250,000 J
300,000 J
0 J
- 25. Multiple Choice
What is the KE at point F?
500,000 J
250,000 J
300,000 J
0 J
- 26. Multiple Choice
As a pendulum swings from its highest to lowest position, what happens to its mechanical energy?
The ME increases.
The ME decreases .
The ME stays the same
- 27. Multiple Choice
What is the total mechanical energy of a 2 Kg sled at point C if all of the starting energy from point A is conserved when the sled reaches point C ?
196 J
98 J
21.8 J
0 J
- 28. Multiple Choice
If the height at point C is 6 meters, determine the potential energy of the 2 kg sled at point C.
117.6 J
17.8 J
21.8 J
0 J
- 29. Multiple Choice
Determine the velocity of the 2 kg sled at point C (h = 6 m) if the starting energy from point A is conserved.
117.6 m/s
78.4 m/s
21.8 m/s
8.85 m/s
- 30. Multiple Choice
What is the velocity of the 2 kg sled velocity at point B if the starting energy from point A is conserved?
8.85 m/s
78.4 m/s
196 m/s
14 m/s
- 31. Multiple Choice
A 3.0-kilogram object is placed on a frictionless track at point A and released from rest. (Assume the gravitational potential energy of the system to be zero at point C.) Calculate the total mechanical energy of the object at point A.
117.6 J
58.8 J
88.2 J
29.4 J
- 32. Multiple Choice
A 2.0-kilogram object is placed on a frictionless track at point A and released from rest. (Assume the gravitational potential energy of the system to be zero at point C.) Calculate the total mechanical energy of the object at point A.
117.6 J
58.8 J
784 J
29.4 J
- 33. Multiple Choice
A 1,200 Kg roller coaster car starts out atop a 20 m hill. Determine the velocity of the roller coaster car at
point A.
235,200 m/s
0 m/s
1,229.8 m/s
94,080 m/s
- 34. Multiple Choice
A 1,200 Kg roller coaster car starts out atop a 20 m hill. Determine the kinetic energy of the roller coaster car at
point B.
235,200 J
0 J
1,229.8 J
141,120 J
- 35. Multiple Choice
A 1,200 Kg roller coaster car starts out atop a 20 m hill. Determine the velocity of the roller coaster car at point B.
235.2 m/s
15.34 m/s
1,229.8 m/s
141,120 m/s
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