Download Final Exam Practice – Physics Mr. Rothenbach

Final Exam Practice – Physics
Mr. Rothenbach
1. Find the total displacement of the object.
2. Write a verbal description of the object’s motion (x0 = +5.0 m).
3. During what time interval(s) is the object’s acceleration the greatest?
Additional questions: what is the object’s average velocity over the entire time interval? What is the
object’s average velocity for 7.0 s? Sketch a motion map and PLOT an x-t and an a-t graph for this object.
THIS PACKET IS FOR REVIEW PURPOSES ONLY. THE QUESTIONS ARE REPRESENTATIVE OF THE TYPES OF
QUESTIONS AND TOPICS THAT THE EXAM WILL CONTAIN. THE EXAM MAY INCLUDE TOPICS THAT WE
COVERED IN CLASS BUT ARE NOT MENTIONED HEREIN.
Final Exam Practice – Physics
Mr. Rothenbach
The above motion map represents a student standing on top of Strath Haven High School. The student
throws a ball into the air above him, and then the ball falls back to the ground. Each square = 1.0 s.
4. Approximate to the nearest whole number the displacement of the ball over the entire period.
5. How far above the building does the ball travel? Give your answer to the nearest whole number.
6. What is the ball’s initial velocity (to the nearest whole number)?
THIS PACKET IS FOR REVIEW PURPOSES ONLY. THE QUESTIONS ARE REPRESENTATIVE OF THE TYPES OF
QUESTIONS AND TOPICS THAT THE EXAM WILL CONTAIN. THE EXAM MAY INCLUDE TOPICS THAT WE
COVERED IN CLASS BUT ARE NOT MENTIONED HEREIN.
Final Exam Practice – Physics
Mr. Rothenbach
Position vs Time data set
Physics Phred walks everyday to school. He usually walks in a constant velocity of 4.0m/s, but today
after he started walking, he stopped to look at his watch, and saw that he was late, so he started
running.
This data set shows his position related to the time, from while he was walking in his normal pace,
looked at his watch, and started running:
X (m)
T(s)
0.0
2.0
4.0
4.0
4.0
6.0
9.0
13.0
18.0
23.0
28.0
33.0
38.0
0.0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
4.5
5.0
5.5
6.0
7. Plot a position vs. time graph from this data set.
8. SKETCH a velocity vs. time graph for this situation.
9. Assuming his motion does not change after 6.0 s, what will be Phred’s position at t = 10.0 s?
10. From your position vs. time graph, find the instantaneous velocity of the object at t = 4.0 s.
THIS PACKET IS FOR REVIEW PURPOSES ONLY. THE QUESTIONS ARE REPRESENTATIVE OF THE TYPES OF
QUESTIONS AND TOPICS THAT THE EXAM WILL CONTAIN. THE EXAM MAY INCLUDE TOPICS THAT WE
COVERED IN CLASS BUT ARE NOT MENTIONED HEREIN.
Final Exam Practice – Physics
Mr. Rothenbach
X0= +6.0 m
Time
Velocity
0
3
1
6
2
9
3
12
4
15
5
18
6
21
7
24
8
27
9
30
10
33
V0= + 3.0 m/s
11. Draw the corresponding Position vs. Time graph.
12. Draw the corresponding Acceleration vs. Time graph.
13. Provide a verbal description of the object’s in motion.
14. Using either algebraic or graphical methods, provide the displacement from 0.0 s
to 4.0 s. Round to the nearest whole number.
THIS PACKET IS FOR REVIEW PURPOSES ONLY. THE QUESTIONS ARE REPRESENTATIVE OF THE TYPES OF
QUESTIONS AND TOPICS THAT THE EXAM WILL CONTAIN. THE EXAM MAY INCLUDE TOPICS THAT WE
COVERED IN CLASS BUT ARE NOT MENTIONED HEREIN.
Final Exam Practice – Physics
Mr. Rothenbach
15. Has magnitude only
_____________________
16. Has direction and magnitude
_____________________
17. Change in velocity
_____________________
18. How far an object moves from its original position to its final position _____________________
19. The study of how objects move
_____________________
20. A force that opposes an applied force on an object at rest
_____________________
21. Mass multiplied by gravitational field strength
_____________________
22. A force acting on a object from a surface
_____________________
23.____The slope of a linear position-time graph represents
24.____The slope of a position-time2 graph represents
25.____The slope of a velocity-time graph represents
26.____The slope of a tangent to a curved position-time graph represents
27.____The area under a position time graph represents
28.____The area under a position-time2 graph represents
29.____The area under a velocity-time graph represents
30.____The area under an acceleration-time graph represents
Possible answers:
a. position
b. time
c. displacement
d. average velocity
e. instantaneous velocity
f. change in velocity
g. average acceleration
h. it doesn’t represent anything
i. it represents something not listed here
31. What region of a graph is meant by “under” a graph?
31. The standard metric units for acceleration are _____________
32. The standard metric units for displacement are ____________
33. The standard metric units for velocity are _____________
34. Draw a motion map for a situation in which a negative acceleration results in an increase in speed.
35. An object has an acceleration of +4.0 m/s2. If it starts from rest, how fast will it be going in 6.0
seconds?
THIS PACKET IS FOR REVIEW PURPOSES ONLY. THE QUESTIONS ARE REPRESENTATIVE OF THE TYPES OF
QUESTIONS AND TOPICS THAT THE EXAM WILL CONTAIN. THE EXAM MAY INCLUDE TOPICS THAT WE
COVERED IN CLASS BUT ARE NOT MENTIONED HEREIN.
Final Exam Practice – Physics
Mr. Rothenbach
A speedboat accelerates uniformly. At t = 30.0 s, it is traveling +10.0 m/s; at t= 50.0 s it is traveling +20.0
m/s.
36. Sketch a velocity time graph to represent the situation.
37. At what time will it be traveling +15 m/s?
A bicyclist slows down with uniform acceleration of -1.0 m/s2. Its average velocity from t = 4.0 to t = 8.0
sec is +12 m/s.
38. Sketch a velocity time graph to represent the situation.
39. When is its instantaneous velocity 12 s?
40. What is its instantaneous velocity at 4.0 sec?
41. A 25 kg box sits on a non-horizontal table (angled at 5 degrees above the horizontal). Draw a force
diagram for the box.
42. The same box falls off the edge of that same 10.0 meter high table. Draw the force diagram for that
situation.
43. How long would take for the box in #42 to hit the ground?
A car is being pushed up a 6 degree incline by a person. The car's brakes are locked so the person is
making very little headway. The car has a mass of 1360 kg. The person is pushing with 1570 N parallel to
the road surface. The person is pushing the car at constant speed.
44. Draw the force diagram.
45. Calculate the frictional force.
THIS PACKET IS FOR REVIEW PURPOSES ONLY. THE QUESTIONS ARE REPRESENTATIVE OF THE TYPES OF
QUESTIONS AND TOPICS THAT THE EXAM WILL CONTAIN. THE EXAM MAY INCLUDE TOPICS THAT WE
COVERED IN CLASS BUT ARE NOT MENTIONED HEREIN.
Final Exam Practice – Physics
Mr. Rothenbach
30.0˚
50.0 kg
45. Find the tension in all three cables.
To push your lawn mower across your lawn at constant speed you exert 50.0N of force at a 45 degree
angle with the horizontal. The mower has a mass of 40.0 kg.
46. Draw a force diagram to represent the situation
47. What is the x-component of the force applied?
48. How does this compare to the frictional force which opposes your effort? Explain.
49. What is the value of the perpendicular force?
50. Draw a force diagram of a wagon that is being pulled to the right with constant velocity with an
applied force of 25.0 N at 45 degrees above the horizontal on a surface with friction.
51. If the wagon in #50 has a mass of 16.0 kg, what is the tension in the wagon handle?
52. What is the value of the perpendicular force?
You push your lawnmower (mass 42 kg) across the lawn at a constant speed. In order to sustain a
constant speed you must exert a force of 70.0 N on the mower. The handle makes a 35 degree angle
with the horizontal.
53. Sketch a force diagram.
54. What is the x component of the applied force?
55. What is the perpendicular force?
THIS PACKET IS FOR REVIEW PURPOSES ONLY. THE QUESTIONS ARE REPRESENTATIVE OF THE TYPES OF
QUESTIONS AND TOPICS THAT THE EXAM WILL CONTAIN. THE EXAM MAY INCLUDE TOPICS THAT WE
COVERED IN CLASS BUT ARE NOT MENTIONED HEREIN.
Final Exam Practice – Physics
Mr. Rothenbach
56. What is another name for force due to gravity?
57. What is the value (numerically with the correct sign) of the Earth's gravitational field strength
(include units)?
58. What would the force due to gravity be for an object whose mass is 1500g? 3500g?
59. What is the mass of an object that has a force due to gravity of -49N?
60. Draw a force diagram for a piece of dry ice that has been pushed to the right across a horizontal
surface. (The hand that gave the push is no longer in contact with the dry ice.)
A box is sitting on a 35 degree inclined ramp where the pulley and ramp are frictionless and the hanging
block is 15 kilograms (not moving).
61. What is the value of the perpendicular force of the block on ramp?
62. What is the value of the tension of the rope on the block?
63. If there is a 10.0 kg sign hanging from a boom that is also held up by a cable from a wall at a 20
degree angle, what are the forces in the x and y direction?
64. Find the tension of the string and the boom as well.
A very strong person is able to push a car up a hill at constant velocity. The hill makes a 20 degree angle
with flat ground. The car’s mass is 500.0 kg. The applied force is 150.0 N.
65. Draw a force diagram of the situation.
66. Write equations for the forces in the x and y directions.
67. What is the force of friction?
68. What is perpendicular force?
THIS PACKET IS FOR REVIEW PURPOSES ONLY. THE QUESTIONS ARE REPRESENTATIVE OF THE TYPES OF
QUESTIONS AND TOPICS THAT THE EXAM WILL CONTAIN. THE EXAM MAY INCLUDE TOPICS THAT WE
COVERED IN CLASS BUT ARE NOT MENTIONED HEREIN.
Final Exam Practice – Physics
Mr. Rothenbach
An object is moving at a constant v for 5.0 seconds then it negatively accelerates at -2.0 m/s/s for 3.0 s,
coming to a complete stop. Then it accelerates; at 15 seconds, it is twice its original velocity.
Find:
69. original v
70. total displacement
71. second acceleration rate
72. change in position for the first 5.0 seconds
73. second constant v
74. inst v at 12.0 sec
Make:
75. motion map
76. graph x vs. t, v vs. t, a vs. t
77. show displacement on the v vs. t graph
THIS PACKET IS FOR REVIEW PURPOSES ONLY. THE QUESTIONS ARE REPRESENTATIVE OF THE TYPES OF
QUESTIONS AND TOPICS THAT THE EXAM WILL CONTAIN. THE EXAM MAY INCLUDE TOPICS THAT WE
COVERED IN CLASS BUT ARE NOT MENTIONED HEREIN.
Final Exam Practice – Physics
Mr. Rothenbach
Physics Phred is at a red light (at rest). When the light turns green, he hits the accelerator. His car can
accelerate at +4.5 m/s2. At 9.0 s, Phred stops accelerating and continues to drive in the same direction
for 3.0 s. After 3.0 s, he brings his car to a stop in 4.0 s.
78. Create a data table of position versus time for his motion from 0.0 s to 16.0 s.
79. SKETCH a motion map of his car’s motion for that time interval.
80. PLOT his motion on a(n):
a. position versus time graph
b. velocity versus time graph
c. acceleration versus time graph
81. What is Phred’s velocity at 9.0 s?
82. What is Phred’s acceleration from 12.0 s to 16.0 s?
83. On the velocity versus time graph, SHOW Phred’s displacement from 9.0 s to 12.0 sec.
84. Using the velocity versus time graph AND/OR the correct kinematic equation(s), determine Phred’s
displacement for the entire time interval.
85. Draw a force diagram of Phred’s car for the time period from 9.0 s to 12.0 s.
86. How is that diagram different from a diagram of Phred’s car during the time while he is waiting at
the red light? (Ignore the internal machinations of the car.)
THIS PACKET IS FOR REVIEW PURPOSES ONLY. THE QUESTIONS ARE REPRESENTATIVE OF THE TYPES OF
QUESTIONS AND TOPICS THAT THE EXAM WILL CONTAIN. THE EXAM MAY INCLUDE TOPICS THAT WE
COVERED IN CLASS BUT ARE NOT MENTIONED HEREIN.