Download Final Review: Problems

Final Review: CP Physics
1. Define each term and list it’s SI unit:
a. Distance Traveled
b. Displacement
c. Instantaneous Speed
d. Average Speed
e. Velocity
f. Acceleration
g. Time
h. Force
i. Mass
j. Work
k. Power
l. Energy
m. Wavelength
n. Frequency
o. Period
2. Convert 500 cm to meters.
3. Convert 6 kg to grams.
4. Convert 2 hours to seconds.
5. What two things do all vectors have?
6. Indicate if the quantity is a vector or a scalar.
a. Mass
b. Time
c. Speed
d. Velocity
e. Force
f. Distance traveled
g. Displacement
h. Energy
7. What is the difference between instantaneous speed and average speed?
8. Does a car speedometer measure instantaneous or average speed?
9. Find your average speed if you run 50 m in 10 seconds.
10. What is the horizontal acceleration of an object in freefall?
11. What is the vertical acceleration of an object in free fall?
12. An apple drops from a tree and hits the ground in 1.5 seconds. What is its speed just
before it hits the ground?
13. A rock gets thrown from a cliff that is 70 m high with a speed of 5 m/s. (ignore air
resistance)
a. How much time does it take for the rock to reach the ground?
b. How far does the rock travel in the horizontal direction?
14. On a distance vs time graph, how can you find the speed of an object?
15. On a velocity vs time graph, how can you tell if the object is moving forward (+) or
backward (-)?
16. Explain the difference between mass and weight.
17. What is Bozo’s weight if he has a mass of 65 kg?
18. State Newton’s 3 Laws.
19. Find the net force acting on the block. Find the acceleration of the block if it has a mass
of 4 kg.
20 N
40N
75 N
20. A 400 kg compact car and a 1600 kg luxury car are given equal accelerations. How
much greater is the force that acts on the more massive car?
21. When is there more pressure on the bottom of your foot, if you are standing on one foot
or two? Explain.
22. A 0.105 kg hockey puck is sliding across the ice. A player exerts a constant 4.50 N force
over a distance of 0.150 m.
a. How much work does the player do on the puck?
b. What is the change in the puck’s energy?
23. A rock climber wears a 7.5 kg backpack while scaling a cliff. After 30.0 min, the climber
is 8.2 m above the starting point.
a. How much work does the climber do on the backpack?
b. If the climber weighs 645 N, how much work does she do lifting herself and the
backpack?
c. What is the average power generated by the climber?
24. State the 6 types of Simple Machines.
25. Define AMA and IMA.
26. What is the efficiency of a machine that has an AMA of 10 and an IMA of 15?
27. You exert a force of 225 N on a lever to raise a 1250 N rock. What is the AMA?
28. You pull the string in a pulley system 25 cm and the load moves 5 cm. What is the IMA?
29. A 700 kg roller coaster is pulled to the top of a hill 50 m high.
a.
What is the potential energy at the top?
b.
What is the speed of the car when it gets to the bottom of the frictionless hill?
30. When an object moves in a circular path,
a. Does the object accelerate?
b. If so, what is the direction of the acceleration?
31. When an object moves in a circular path,
a. Is there a net force acting on the object?
b. If so, what is the name of the net force?
32. A turntable makes 10 rotations in 30 seconds.
a. What is the period?
b. What is the frequency?
33. A merry go round has a period of 2 seconds. A 50 kg rider is sitting 4 m from the center.
a. What is the rider’s angular speed?
b. What is the rider’s linear speed?
c. What is the rider’s centripetal acceleration?
d. What is the amount of the centripetal force?
34. What is the name of the force that keeps the planets in the solar system?
35. If the distance between two objects doubles, what happens to the gravitational force
between the objects?
36. If the distance between two objects is decreased by a factor of 3, what happens to the
gravitational force?
37. When a satellite orbits a planet
a. What is the shape of the orbit?
b. Does the velocity stay constant or change?
c. Where is the gravitational potential energy the maximum?
d. Where is the kinetic energy the maximum?
38. What are the two types of waves?
39. Describe wavelength and amplitude of a wave.
40. What type of wave is a sound wave?
41. What type of wave is a light wave?
42. A wave travels 100 m in 5 seconds.
a. What is the speed of the wave?
b. The distance between two crests is 2 meters. What is the frequency of the wave?