Physics 100 Final Exam
2026 | Study Guide,
Practice Questions,
Answers, Rationales &
Exam Review | Complete
Ethics Study Guide
Updated 2026 Questions and Answers
100% Verified Exam Prep and Comprehensive
Rationales
Included
,Suppose you have two cars, and the larger one is twice as The force on the larger car is twice that on the smaller car.
massive as the smaller one. If you and a friend push on
them so that their accelerations are equal, how must the
forces applied to the cars compare?
Suppose you are driving north and suddenly hit your South
brakes to avoid a dog in the road. As you come to a stop
your acceleration is directed
You start running and manage to cover 25 meters in 5 2.3 m
seconds before losing your
breath. You then slow your pace and walk 10 meters
during the next 10 seconds. What is your
average speed during the entire motion?
How much potential energy does a 21 kg box that is 3m 630 J
above the ground have?
Suppose a tree branch falls straight down to the ground It covers more distance during the last second.
with constant acceleration and
takes 2 seconds to hit the ground. Which of the following
statements regarding the path of the
branch is true?
Suppose you travel to a planet where the acceleration due 1/4
to gravity is a quarter of that
on Earth. How will your weight on the new planet compare
to your weight on Earth (in other
words, what is the ratio 𝑊𝑛𝑒𝑤𝑝𝑙𝑎𝑛𝑒𝑡/𝑊𝐸𝑎𝑟𝑡ℎ)?
Suppose you drop an object out of the window of a The halfway point in distance occurs after the halfway point in time
building and wait for it to hit the
ground. How does the halfway point in distance traveled
compare to the halfway point in the falling time?
You are trying to loosen a lug nut so you can change a flat 2000 Nm
tire on your car. You have a
mass of 100 kg and stand on the end of a 2 m long
wrench. How much torque do you exert on
the lug nut?
A projectile is thrown directly upward and caught again. At Its vertical velocity is zero
the top of its path, what can be It is at a maximum distance
said about the projectile? Select all that apply
You are helping take groceries inside your house via a work=0
heavy bag, keeping the bag at a
constant level and walking at a constant speed. During
your trip inside, describe the total work
you do on the bag
Consider a 100 kg adult at the playground with a 20 kg at 1.5 m
child. They decide to enjoy
balancing on a seesaw, which is a uniform board 4 m long
and pivoted exactly at its center. If the
child sits at the seesaw's end (2m from the center), how far
from the center on the other side
should the adult sit?
Some climatologists say that our climate could be warm Increase due to angular momentum conservation
enough to melt the polar ice
caps, sending the resulting water down towards the
equator. If this were to happen, the length
of the day would
, Suppose you are at a stoplight and realize that an Inertia, car moves forward and papers stay still so they fall
important antique physics textbook
sale ends in five minutes. Naturally, you accelerate forward
rapidly from rest to get there before the sale ends. From
your perspective, some papers on the dashboard fly
straight backwards asyou accelerate. Do the papers also
appear to fly backwards to an observer on the ground
(outside the car)? If yes, explain why. If no, why not and
how do they appear to move?
Suppose you use a ramp to lift a 200 kg object. You raise it GPE=mgh=200(10)2=400 J
2 m above the ground and did Need 5000J to overcome 1000J of friction
5000 J of work on the object. Assuming that gravity and
friction are the only forces you had to
work against, was there any friction present on the ramp?
If so, how much work did you have to do against it? Show
your work.
You're swinging on a standard playground swing, which a. At peak of swing(front and back)
carries you in a circular arc, back and b. when v=0 (At peak of swing(front and back))
forth, once every few seconds. Assume the rope is 1.5 c. when h=0 (bottom of wing)
meters long and that your mass is 60 kg. For making d. yes bc velocity is changing so it is accelerating
calculations more straightforward, you may approximate g e. support force greater than weight since accelerating so net force present
to be 10 m/s2 f. Work=0, displacement tangent to the circle, tension tangent to the circle, F
a. (2 pts) Where is your velocity zero? perpendicular to d
b. (2 pts) Where is your gravitational potential energy at its g. tangent to circle than parabola, part of half circle
maximum?
c. (2 pts) Where is your kinetic energy at its maximum?
d. (3 pts) As you reach the bottom of the circular path of
the swing, when the swing's ropes are exactly vertical, are
you accelerating? How do you know?
e. (3 pts) At the moment described in part (d), is the
support force that the swing seat exerts on you more, less,
or equal to your weight? Explain your answer.
f. (3 pts) What is the numerical value of the work done by
the tension in the ropes of the swing? Show your work.
g. (3 pts) At the peak of the swing's motion you decide to
jump off! Draw or describe your resulting motion before
you hit the ground.
Consider a 6 kg box of candy on a horizontal table. There a. W=Fd=10(2)=20J
is a constant 10N applied force to the right and a constant b. W=Fd=7(-2)=-14J
7 N frictional force to the left. Suppose the box moves 2 m
to the right across the table, to its impending doom of
hungry guests.
a. (3 pts) What is the work done by the 10 N force?
b. (3 pts) What is the work done by the 7 N frictional force?
Suppose you are an accident investigator for the police bouncing is worse
and are investigating two car accidents. means larger impulse (change in momentum)
Before you go to either accident scene, you know both means larger force
accidents were head-on collisions with identical cars
moving at identical speeds, but in one case the cars
locked bumpers while in the other case they bounced off
each other elastically. From a physics point of view, which
accident is more dangerous and why?
2026 | Study Guide,
Practice Questions,
Answers, Rationales &
Exam Review | Complete
Ethics Study Guide
Updated 2026 Questions and Answers
100% Verified Exam Prep and Comprehensive
Rationales
Included
,Suppose you have two cars, and the larger one is twice as The force on the larger car is twice that on the smaller car.
massive as the smaller one. If you and a friend push on
them so that their accelerations are equal, how must the
forces applied to the cars compare?
Suppose you are driving north and suddenly hit your South
brakes to avoid a dog in the road. As you come to a stop
your acceleration is directed
You start running and manage to cover 25 meters in 5 2.3 m
seconds before losing your
breath. You then slow your pace and walk 10 meters
during the next 10 seconds. What is your
average speed during the entire motion?
How much potential energy does a 21 kg box that is 3m 630 J
above the ground have?
Suppose a tree branch falls straight down to the ground It covers more distance during the last second.
with constant acceleration and
takes 2 seconds to hit the ground. Which of the following
statements regarding the path of the
branch is true?
Suppose you travel to a planet where the acceleration due 1/4
to gravity is a quarter of that
on Earth. How will your weight on the new planet compare
to your weight on Earth (in other
words, what is the ratio 𝑊𝑛𝑒𝑤𝑝𝑙𝑎𝑛𝑒𝑡/𝑊𝐸𝑎𝑟𝑡ℎ)?
Suppose you drop an object out of the window of a The halfway point in distance occurs after the halfway point in time
building and wait for it to hit the
ground. How does the halfway point in distance traveled
compare to the halfway point in the falling time?
You are trying to loosen a lug nut so you can change a flat 2000 Nm
tire on your car. You have a
mass of 100 kg and stand on the end of a 2 m long
wrench. How much torque do you exert on
the lug nut?
A projectile is thrown directly upward and caught again. At Its vertical velocity is zero
the top of its path, what can be It is at a maximum distance
said about the projectile? Select all that apply
You are helping take groceries inside your house via a work=0
heavy bag, keeping the bag at a
constant level and walking at a constant speed. During
your trip inside, describe the total work
you do on the bag
Consider a 100 kg adult at the playground with a 20 kg at 1.5 m
child. They decide to enjoy
balancing on a seesaw, which is a uniform board 4 m long
and pivoted exactly at its center. If the
child sits at the seesaw's end (2m from the center), how far
from the center on the other side
should the adult sit?
Some climatologists say that our climate could be warm Increase due to angular momentum conservation
enough to melt the polar ice
caps, sending the resulting water down towards the
equator. If this were to happen, the length
of the day would
, Suppose you are at a stoplight and realize that an Inertia, car moves forward and papers stay still so they fall
important antique physics textbook
sale ends in five minutes. Naturally, you accelerate forward
rapidly from rest to get there before the sale ends. From
your perspective, some papers on the dashboard fly
straight backwards asyou accelerate. Do the papers also
appear to fly backwards to an observer on the ground
(outside the car)? If yes, explain why. If no, why not and
how do they appear to move?
Suppose you use a ramp to lift a 200 kg object. You raise it GPE=mgh=200(10)2=400 J
2 m above the ground and did Need 5000J to overcome 1000J of friction
5000 J of work on the object. Assuming that gravity and
friction are the only forces you had to
work against, was there any friction present on the ramp?
If so, how much work did you have to do against it? Show
your work.
You're swinging on a standard playground swing, which a. At peak of swing(front and back)
carries you in a circular arc, back and b. when v=0 (At peak of swing(front and back))
forth, once every few seconds. Assume the rope is 1.5 c. when h=0 (bottom of wing)
meters long and that your mass is 60 kg. For making d. yes bc velocity is changing so it is accelerating
calculations more straightforward, you may approximate g e. support force greater than weight since accelerating so net force present
to be 10 m/s2 f. Work=0, displacement tangent to the circle, tension tangent to the circle, F
a. (2 pts) Where is your velocity zero? perpendicular to d
b. (2 pts) Where is your gravitational potential energy at its g. tangent to circle than parabola, part of half circle
maximum?
c. (2 pts) Where is your kinetic energy at its maximum?
d. (3 pts) As you reach the bottom of the circular path of
the swing, when the swing's ropes are exactly vertical, are
you accelerating? How do you know?
e. (3 pts) At the moment described in part (d), is the
support force that the swing seat exerts on you more, less,
or equal to your weight? Explain your answer.
f. (3 pts) What is the numerical value of the work done by
the tension in the ropes of the swing? Show your work.
g. (3 pts) At the peak of the swing's motion you decide to
jump off! Draw or describe your resulting motion before
you hit the ground.
Consider a 6 kg box of candy on a horizontal table. There a. W=Fd=10(2)=20J
is a constant 10N applied force to the right and a constant b. W=Fd=7(-2)=-14J
7 N frictional force to the left. Suppose the box moves 2 m
to the right across the table, to its impending doom of
hungry guests.
a. (3 pts) What is the work done by the 10 N force?
b. (3 pts) What is the work done by the 7 N frictional force?
Suppose you are an accident investigator for the police bouncing is worse
and are investigating two car accidents. means larger impulse (change in momentum)
Before you go to either accident scene, you know both means larger force
accidents were head-on collisions with identical cars
moving at identical speeds, but in one case the cars
locked bumpers while in the other case they bounced off
each other elastically. From a physics point of view, which
accident is more dangerous and why?
