June 1997, Part 1
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1. What is the total displacement of a student who walks 3 blocks east, 2 blocks north, 1 block west, and then 2 blocks south?
1. 0
2. 2 blocks east
3. 2 blocks west
4. 8 blocks
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2. A baseball pitcher throws a fastball at 42 meters per second. If the batter is 18 meters from the pitcher, approximately how much time does it take for the ball to reach the batter?
1. 1.0 s
2. 2.3 s
3. 0.86 s
4. 0.43 s
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3. The length of a high school physics classroom is probably closest to
1. 10-2 m
2. 10-1 m
3. 101 m
4. 104 m
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4. A stone is dropped from a bridge 45 meters above the surface of a river. Approximately how many seconds does the stone take to reach the water's surface?
1. 1.0 s
2. 10. s
3. 3.0 s
4. 22 s
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5. A 150.-newton force, F size="-2">1, and a 200.-newton force, F size="-2">2, are applied simultaneously to the same point on a large crate resting on a frictionless horizontal surface. Which diagram shows the forces positioned to give the crate the greatest acceleration?

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6. The displacement-time graph below represents the motion of a cart along a straight line.

During which interval was the cart accelerating?

1. AB
2. BC
3. CD
4. DE
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7. A ball rolls through a hollow semicircular tube lying flat on a horizontal tabletop. Which diagram best shows the path of the ball after emerging from the tube, as viewed from above?

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8. A 100.-newton force acts on point P, as shown in the diagram below.

The magnitude of the vertical component of this force is approximately

1. 30. N
2. 50. N
3. 71 N
4. 87 N

Base your answers to questions 9 and 10 on the information below.

A 1000-kilogram car traveling with a velocity of +20. meters per second decelerates at -5.0 meters per second squared until it comes to rest.

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9. What is the total distance the car travels as it decelerates to rest?
1. 10. m
2. 20. m
3. 40. m
4. 80. m
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10. What is the magnitude of the impulse applied to the car to bring it to rest?
1. 1.0 x 104 Newton-seconds
2. 2.0 x 10 4 Newton-seconds
3. 3.9 x 104 Newton-seconds
4. 4.3 x 104 Newton-seconds
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11. The graph below shows the weight of three objects on planet X as a function of their mass.

The acceleration due to gravity on planet X is approximately

1. 0.17 meters per second squared
2. 6.0 meters per second squared
3. 9.8 meters per second squared
4. 50. meters per second squared
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12. What is the magnitude of the net force acting on a 2.0 x 103 kilogram car as it accelerates from rest to a speed of 15 meters per second in 5.0 seconds?
1. 6.0 x 103 N
2. 2.0 x 104 N
3. 3.0 x 104 N
4. 6.0 x 104 N
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13. In the diagram below, surface B of the wooden block has the same texture as surface A, but twice the area of surface A.

If force F is required to slide the block at constant speed across the table on surface A, approximately what force is required to slide the block at constant speed across the table on surface B?

1. F
2. 2F
3. F/2
4. 4F
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14. The diagram below shows two carts on a horizontal, frictionless surface being pushed apart when a compressed spring attached to one of the carts is released. Cart A has a mass of 3.0 kilograms and cart B has a mass of 5.0 kilograms. The speed of cart A is 0.33 meters per second after the spring is released.

If the carts are initially at rest, what is the approximate speed of cart B after the spring is released?

1. 0.12 m/s
2. 0.20 m/s
3. 0.33 m/s
4. 0.55 m/s
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15. The magnitude of the gravitational force of attraction between Earth and the Moon is approximately
1. 2.1 x 1020 N
2. 6.0 x 1024 N
3. 6.7 x 10-11 N
4. 7.8 x 1028 N
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16. How much work is done on a downhill skier by an average braking force of 9.8 x 102 newtons to stop her in a distance of 10. meters?
1. 1.0 x 101 J
2. 9.8 x 101 J
3. 1.0 x 103 J
4. 9.8 x 103 J
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17. Which variable expression below is paired with a corresponding unit?

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18. A spring has a spring constant of 120 newtons per meter. How much potential energy is stored in the spring as it is stretched 0.20 meter?
1. 2.4 J
2. 4.8 J
3. 12 J
4. 24 J
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19. The graph below shows the relationship between the elongation of a spring and the force applied to the spring causing it to stretch.

What is the spring constant for this spring?

1. 0.020 N/m
2. 2.0 N/m
3. 25 N/m
4. 50. N/m
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20. A motor having a maximum power rating of 8.1 x 104 watts is used to operate an elevator with a weight of 1.8 x 104 newtons. What is the maximum weight this motor can lift at an average speed of 3.0 meters per second?
1. 6.0 x 103 N
2. 1.8 x 104 N
3. 2.4 x 104 N
4. 2.7 x 104 N

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