Download Honors Physics Midterm

Name ________________________________________________
Period ______
CP Physics PRACTICE Midterm
Directions: Read each question carefully. For each problem, SHOW YOUR WORK!
Circle the letter that represents the best answer to each question. Put your calculator in
DEGREE MODE!
1. A pirate buries a treasure chest on a small abandoned island. Once he reaches the
shore, he walks 2 miles inland, buries the treasure, and then returns to the boat. This
requires a total time of 8 hours. What is the pirate’s average velocity for this trip?
a) 0 mph
b) 0.5 mph
c) 2 mph
d) 0.25 mph
2. A delicious ham and cheese sandwich falls from a hot air balloon that is moving
downwards with a speed of 1.6 m/s. It hits the ground after falling for 3.5 seconds.
How high above the ground was the balloon when the sandwich fell?
a) 125.65 m
b) 54.4 m
c) 22.75 m
d) 65.6 m
3. A soccer player kicks a soccer ball off the ground with an initial velocity of 15 m/s at
an angle of 28 degrees. How high above the ground is the ball when it has been in the
air for 0.91 seconds?
a) 8 m
b) 2.35 m
c) 0 m
d) 8.35 m
4. Manny Ramirez hits a baseball that clears the Green Monster and then some. When it
reaches its highest point, how does the speed of the ball compare to the initial speed?
a) The ball has the same speed.
b) The ball is moving more slowly than when it was hit.
c) The ball has stopped.
d) The ball has a greater speed than when it was hit.
5. Intergalactic Space Superhero Ace Daring stands on a scale on Earth to find his
weight. He then takes the same scale to the Moon, where the acceleration due to
gravity is weaker than on Earth. How does his weight on the Moon compare to his
weight on the Earth?
a) The weights are the same.
b) The weight on Earth is greater than the weight on the Moon.
c) The weight on the Moon is greater than the weight on Earth.
d) Impossible to say without knowing the mass of Ace Daring.
CP Physics
Midterm Exam
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Bradshaw 05-06
Name ________________________________________________
Period ______
6. An Atwood’s machine consists of a 0.5 kg mass tied to a 1.2 kg mass by a string
which hangs over a pulley. The pulley is free to rotate without friction. When
released from rest, what is the acceleration?
a) 6.92 m/s2
b) 2.88 m/s2
c) 16.61 m/s2
d) 4.04 m/s2
7. A 5 kg cart and a 10 kg cart are at rest at the top of an incline. They are released from
rest. How do the accelerations of the carts compare?
a) The accelerations are the same.
b) The 10 kg cart has a higher acceleration because the gravitational force is stronger.
c) The 5 kg cart has a greater acceleration because the gravitational force is weaker.
d) Cannot be determined without knowing what  is.
8. What is the tension in the string tied to a 1.5 kg rock swinging around in a circle of
radius 1.6 m if its speed is 8.4 m/s?
a) 1.35 N
b) 7.9 N
c) 94.1 N
d) 66 N
9. A bowling ball is 18.3 m away from a bowling pin. The ball has a mass of 7.0 kg,
and the pin has a mass of 1.51 kg. What is the gravitational force of attraction
between them?
a) 5.66 N
b) 3.85 * 10-11 N
c) 2.11 * 10-12 N
d) 0.31 N
10. A sled is pulled by a 110 N force, which is exerted at an angle of 25 degrees above
the horizontal. The sled slides 2.8 m along the flat ground as a result. How much
work was done to the sled?
a) 305 J
b) 2,747 J
c) 308 J
d) 279 J
11. A 1,400 car’s engine does a total work of 58,000 J to accelerate it from rest. What is
the car’s final velocity due to this work?
a) 6.44 m/s
b) 9.10 m/s
c) 82.9 m/s
d) 41.4 m/s
12. A crane lowers a 320 kg barrel of bricks from a height of 25 m down to 8 m above the
ground. How much potential energy have the bricks lost?
a) 53,300 J
b) 78,400 J
c) 25,100 J
d) 5,440 J
13. A 490 N/m spring is stretched downwards 0.24 m. How much potential energy has
been stored in this spring?
a) 14.1 J
b) 1.44 J
c) 58.8 J
d) 6 J
CP Physics
Midterm Exam
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Bradshaw 05-06
Name ________________________________________________
Period ______
14. A block is compressed against a spring that is mounted horizontally to a wall. The
spring constant is 200 N/m, and the spring is compressed a distance of 0.4 m. The
block has a mass of 2 kg. The system is then released from rest. What is the final
velocity of the block when the spring is completely relaxed?
a) 40 m/s
b) 6.32 m/s
c) 16 m/s
d) 4 m/s
15. A 55 kg cross-country runner has a kinetic speed of 6 m/s. What is her momentum?
a) 330 kgm/s
b) 110 kgm/s
c) 660 kgm/s
d) 1,980 kgm/s
16. A 0.15 kg baseball is thrown into a 2.25 kg box. The baseball and box move with a
final velocity of 2 m/s. What is the initial velocity of the baseball?
a) 30 m/s
b) 32 m/s
c) 2 m/s
d) 2.13 m/s
17. A centrifuge is spinning with an initial angular velocity of 600 revolutions per
minute. The motor is turned off, and the centrifuge stops spinning after 100 seconds.
What is the angular acceleration of the centrifuge?
a) -6 rad/s 2
b) -0.16 rad/s2
c) -0.628 rad/s2
d) -1.59 rad/s2
18. A CD starts from rest and begins to spin with an angular acceleration of 72 rad/s2 for
8 seconds. What is its angular displacement?
a) 288 radians
b) 576 radians
c) 2,304 radians
d) 9 radians
19. A proton is zipping around a cyclotron with an angular velocity of 21,000 rad/s. Its
rotational inertia is 2.8 * 10-19 kg*m2. How much rotational kinetic energy does the
proton have?
a) 2.94 * 10-15 J
b) 5.88 * 10-15 J
-10
c) 1.2348 * 10 J
d) 6.174 * 10-11 J
CP Physics
Midterm Exam
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Bradshaw 05-06