Home
Subjects
Textbook solutions
Create
Study sets, textbooks, questions
Log in
Sign up
Upgrade to remove ads
Only $35.99/year
Physics Final Exam
STUDY
Flashcards
Learn
Write
Spell
Test
PLAY
Match
Gravity
Terms in this set (46)
A ball is thrown straight up in the air. When air resistance is ignored. Which of the following is true at the ball's highest point?
|. velocity is 0
||. acceleration is 0
|||. acceleration is directed downward
E
| and ||| only
Objects R and S start at the same origin, and their velocity vs. Time graphs are shown on the same set of axes.
After 2 seconds, the two objects are
C
5m apart
After 4 seconds,
E
all A, B and C
A car with an initial positive velocity slows to a stop with a constant acceleration.
Which graph best represents its position vs. time graph?
C
Which graph best represents the velocity vs time graph?
A
A ball is thrown straight up near the edge of a 25m cliff with a speed of 20m/s. If it misses the cliff's edge on the way down, it will hit the ground in a time closest to
D
5s
An object moves with a velocity vs time graph. The position vs time graph for the same time period would be
B
A car traveling at 20m/a can come to a stop after traveling 30m. If the car is traveling at 40m/s, how far must it travel to stop, assuming the same acceleration?
20m
Starting from rest, a ball rolls down a long incline with a constant acceleration. After 2s, it has traveled 2m. In the next second it will travel
B
2.5m
A rock is dropped from the edge of a cliff 45m high. One second later, a second rock is thrown straight down with just the right speed to ensure that the two rocks hit the ground at the same time. The initial speed of the second rock is closest to
D
12.5m/s
A weight W is pulled by a rope at an angle 0 across a horizontal surface where the coefficient of kinetic friction is u. Which of the following is true for the friction force f acting on the mass?
D
f=u(W-Fsin0)
A tension T exists in the rope connecting the two masses. The value of F is
D
5/3 T
When F= 8N, the 4kg mass accelerates to the right at 1 m/s^2. If F is doubled to 16N, the acceleration will be
D
4m/s^2
A 3kg mass is moving in a vertical circle of radius 4m at a constant speed of 8m/s. At point P, the magnitude and direction of the centripetal acceleration are given by
D
16m/s^2 - x
Two teams engage in a tug-of-war with a rope held horizontal. Which is true of the winning team?
D
They exerted a greater force on the ground parallel to the surface.
A 10kg uniform plank of length L is pivoted at it's center. A 4kg mass is to be placed on the right end. How far from the pivot must a 6kg mass be placed to keep the plank in equilibrium?
D
L/3
A 3kg mass moving at 6m/a is brought to rest in 2s. The magnitude of the net force acting on the mass is
B
9N
A 12kg mass is at rest on a 30° incline where the coefficient of static friction is 0.8. The friction force exerted on the mass is most nearly
D
60N
A pendulum consists of a rope of length 2m and a bob of mass 4kg. It moves through it's lowest point with a speed of 6m/s. The tension in the rope is most nearly
D
112N
Assuming no friction, to double the current value of the system acceleration, you can
|. double the value of m2
||. halve the value of m1
|||. halve the value of (m1 + m2) by adjusting m1 only
E
|. and |||.
A 4kg mass accelerates 6m across a frictionless surface under the influence of a 20N force as shown in figure 10. The work done over this interval is
B
60 √3J
Starting from the origin with speed v0, a mass m moves in one dimension under the influence of the force shown in the figure. When the mass reaches x, its kinetic energy will be
A
1/2Fx - 1/2mv0^2
Starting from rest and a height of 10m, a 2kg mass slides down a 30° incline, reaching the bottom with a speed of 10m/s. What is the approximate work done by friction?
C
-100J
A mass is attached to an ideal spring on a smooth horizontal surface. It is displaced an amount Δxo and released. Which of the following is true?
|. KE is largest when the mass passes through the equilibrium point
||. PE is largest when the mass has a displacement of ±Δxo
|||. PE and KE will never be equal
D
| and || only
A 2kg mass is raised 6m at a constant speed of 3m/s by a vertical rope. The power supplied by the rope is most nearly
E
60W
When is total mechanical energy of a system conserved?
|. always
||. when nonconservative forces are present but do no work
|||. when nonconservative forces are not present
E
|| and ||| only
A 4kg mass with a total energy of 150J moves under the influence of the potential energy shown below.
At x=4, the speed of the mass is closest to
B
5m/s
When the mass is at x=4, the displacement it must undergo to reach its maximum x-coordinate is closest to
C
0.5m
A 4kg mass initially moving at 5m/s slides across a horizontal surface where the force of kinetic friction on the mass is 12N. After 1s, the rate at which the mass loses mechanical energy is
D
24W
A 3kg mass is attached to a light string 2m long and hung vertically to make a simple pendulum. The pendulum is displaced until the string is horizontal and then released. Sharks the approximate speed of the pendulum at it's lowest point?
B
6m/s
A 2kg mass moving at 3m/a hits a vertical wall and rebounds with the same speed. If the contact time with the walk is 0.01s, the magnitude of the force exerted on the mass is most nearly
C
1,200 N
A 1,000 kg vehicle moving at 3m/s collides with a 2,000 kg stationary vehicle. After the collision, the two move together. The speed of the two just after collision is
B
1m/s
A compressed spring is placed between two masses M and m resting on a smooth horizontal surface. When the spring is released, the two fly apart, with M moving at velocity V. The velocity of m is
B
-M/m (V)
A mass M moving with velocity v experiences the force described in the previous question for 5 seconds. The change in momentum of the mass is
D
-20 kg(m)/s
A mass rebounds off a wall elastic ally as shown in the figure. The vector that best represents the impulse delivered by the wall is
C
←
A mass m moving east with speed v on a smooth horizontal surface explodes into two pieces. After the explosion, one piece of mass 3/4m continues in the same direction with speed 4/3v. Find the magnitude and direction for the velocity of the other piece.
B
The piece is at rest.
A man of mass m stands at the read of a uniform plank of equal mass and length L that rests on a frictionless surface. The man walks forward to the center of the plank. Relative to the surface, the man has moved
C
L/4
A 0.5kg mass moving north at 4m/s collides head-on with a 10kg stationary mass in an elastic collision. After the collision, the velocity of the 0.5 kg mass is most nearly
C
3.5m/s south
A mass M moving with speed v collides with a stationary spring fun of equal mass containing an uncompressed spring with spring constant K. Assume all surfaces are frictionless.
The maximum compression of the spring will be
E
v √M/2K
After the collision, the gun will be moving with a speed most nearly
C
v
Two masses separated by a distance R exert a gravitational force F on each other. To triple the force, the separation must be changed to
E
R/√3
A student with mass 60kg imagines she travels to a planet with twice the mass of the Earth and four times the radius of the Earth. Her weight on this planet would be closest to
C
75N
A satellite is currently moving in a circular orbit of radius R with orbital speed v. With the aid of onboard rockets, it moves out of this orbit and eventually establishes a new circular orbit of radius 1/2 (R). The orbital speed will be
A
√2v
In an elliptical orbit about the Sun, which of the following planetary properties is conserved?
|. mechanical energy
||. linear momentum
|||. angular momentum
B
| and ||| only
Astronauts float around inside the space shuttle as is orbits because
C
they are accelerating toward the Earth's center at the same rate as the shuttle and everything within it
A satellite circularly orbits Earth at a radius R taking a time T to complete one orbit. What would the time for one orbit of the same radius be on a planet with twice the mass of Earth?
B
T/√2
Sets with similar terms
Maggie's Test
81 terms
AP Physics Frankenstein MC
86 terms
Ap physics test review- momentum and impulse
59 terms
Other sets by this creator
Physics Final 3
13 terms
Physics Final 2
38 terms
Other Quizlet sets
NMED T&T Exam 3 (MPI)
51 terms
geschiedenis hoofdstuk 9 vragen kunnen
10 terms
Digestive/ Reproductive notecards
12 terms
ECON 2040 Ch 2 Questions
15 terms
Related questions
QUESTION
Explain how the presence of discrete frequencies in line emission spectra provides evidence for the existence of states with discrete energies in atoms.
QUESTION
As a car follows a bend in the road going to the left, it's centripetal acceleration is going to the......
QUESTION
Missy Diwater, the former platform diver for the Ringling Brother's Circus had a kinetic energy of 15,000 J just prior to hitting the bucket of water. If Missy's mass is 50 kg, then what is her speed?
QUESTION
A firecracker sitting on the ground explodes into two pieces. Immediately after the explosion, one of the pieces has momentum of 0.5 kg·m/s in the east direction. What is the momentum of the other piece?