Question 1

Gravitational potential energy can have a negative value.

Choose the correct answer:

1. True
2. False

Question 2

Elastic potential energy can have a negative value.

Choose the correct answer:

1. True
2. False

Question 3

Which of the following conditions must be met in order to use the Kinematic Equations?

1. Choose the correct answer:
2. The object cannot be accelerating.
3. The object must start from rest.
4. The object must be in equilibrium.
5. The object muct undergo a uniform acceleration.

Question 4

You're trying to make a piece of toast before coming to class, but the bread isn't toasting. As a science student, you decide to employ the scientific method in order to figure out why your bread isn't toasting. Which of the following would not be a good test to perform?

1. Choose the correct answer:
2. Check to see if the toaster is plugged into the electrical outlet.
3. Check that the circuit breaker in your electrical panel didn't trip.
4. Try toasting a bagel in the toaster instead.
5. Plug a hair drier into the electrical outlet the toaster was plugged into and see if it works.

Question 5

A box slides along a frictionless floor. The normal force acting on the block does ____________ on the block.

Complete the sentence.

1. positive work
2. negative work
3. no work
4. not enough information to answer the question

Question 6

A box slides to the right along a frictionless floor. In an effort to speed the block up, you apply an additional force on it directed to the right. As a result, you do ____________ on the block.

Complete the sentence.

1. positive work
2. negative work
3. no work
4. not enough information to answer the question

Question 7

A box slides to the right along a frictionless floor. In an effort to stop the block from sliding, you apply an additional force on it directed to the left. As a result, you do ____________ on the block.

Complete the sentence.

1. positive work
2. negative work
3. no work
4. not enough information to answer the question

Question 8

During a basketball game, Karl Malone jumps up and dunks the basketball for two points, drawing a foul from Bill Laimbeer at the same time. As Karl Malone is in the air, the force of the Earth's gravity pulls him back down to the court. What is the Newton's 3rd Law pair to the force of gravity on Karl Malone?

Choose the correct answer:

1. The force of Karl Malone on Bill Laimbeer
2. The force of the Earth on Karl Malone
3. The force of Karl Malone on the Earth
4. The force of Karl Malone on the court

Question 9

A 1.3 kg mass is attached to an ideal spring. The mass is free to move horizontally along a frictionless surface and the spring constant is 5 N/m. If the mass is released from rest with an amplitude of 0.4 m, what will be the speed of the mass as it reaches the spring's equilibrium position (a.k.a. rest length)?

Choose the correct answer:

1. -3.1 m/s

2. -1.5 m/s

3. -1.0 m/s

4. -0.8 m/s

5. -0.6 m/s

6. -0.4 m/s

7. 0.4 m/s

8. 0.6 m/s

9. 0.8 m/s

10. 1.0 m/s

11. 1.5 m/s

12. 3.1 m/s

Question 10

A ball is thrown vertically straight down from atop a 33 m high cliff. If the ball is thrown with an initial speed of 5.1 m/s, what will be the ball's speed just as it reaches the ground below?

Choose the correct answer:

1. 5.1 m/s

2. 25.5 m/s

3. 26.0 m/s

4. 647.5 m/s

5. 652.6 m/s

6. 673.6 m/s

Question 11

A ball is thrown vertically straight up into the air with an initial speed of 20 m/s. How long will it take to reach its maximum height?

Choose the correct answer:

1. 1.4 s

2. 2.0 s

3. 4.0 s

4. 14.0 s

5. 196.2 s

Question 12

What magnitude and direction of force must you apply to a 7 kg mass in order to lift it up with an acceleration of 1.1 m/s^2? Assume up is in the positive direction.

Choose the correct answer:

1. -76.4 N

2. -61.0 N

3. -10.0 N

4. -9.7 N

5. -1.6 N

6. -1.2 N

7. +1.2 N

8. +1.6 N

9. +9.7 N

10. +10.0 N

11. +61.0 N

12. +76.4 N

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