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WorksheetsPhysics Practice Final
Total questions: 50
Worksheet time: 25mins
The graph below represents the relationship between velocity and time for an object moving along a straight line. What is the magnitude of the object's acceleration?
5.0 m/s2
8.0 m/s2
10. m/s2
20. m/s2
The graph below represents the relationship between velocity and time for an object moving along a straight line. In addition to the data in the graph above, what else would students
need to measure to determine the magnitude of the net force on this
object?
Mass only
Distance the object travels each second
The direction of the motion
The mass of the object and the distance it travels each second
A projectile is launched from the ground and lands at the same height from which it was launched. For which initial velocity will the projectile be in the air the longest? [Neglect friction.]
A 6.0-kg cart initially traveling at 4.0 m/s East accelerates uniformly at 0.50 m/s2 East for 3.0 seconds. What is the velocity of the cart at the end of this 3.0 second interval?
1.5 m/s East
3.0 m/s East
5.5 m/s East
7.0 m/s East
A 5.0-kilogram box is sliding across a level floor. The box is acted upon by a force of 27 newtons east and a frictional force of 17 newtons west. What is the magnitude of the acceleration of the box?
0.50 m/s2
2.0 m/s2
8.8 m/s2
10. m/s2
The diagram below represents a 2.0-kilogram toy car moving at a constant speed of 3.0 meters per second counterclockwise in a circular path with a radius of 2.0 meters. At the instant shown in the diagram, the centripetal force acting on the car is --
6 N
9 N
12 N
36 N
The diagram below represents a 2.0-kilogram toy car moving at a constant speed of 3.0 meters per second counterclockwise in a circular path with a radius of 2.0 meters. 8. 9. The centripetal force on this toy car at the instant shown in the diagram -
Directed North and is the result of the normal force on the car
Directed West and is the result of the normal force on the car
Directed North and is the result of the friction force on the car
Directed West and is the result of the friction force on the car
The diagram below represents a 2.0-kilogram toy car moving at a constant speed of 3.0 meters per second counterclockwise in a circular path with a radius of 2.0 meters. If the car hits a patch of ice at the instant shown in the diagram what direction will it continue to move?
North
West
Northeast
Northwest
The graph below shows the relationship between distance, d, and time, t, for an object moving in a straight line. Which of the graphs below could represent the velocity-time graph that matches the position-time graph above?
14. A student wishes to record a 7 .5-kilogram watermelon colliding with the ground at a speed of 30 m/s. How long must the watermelon fall freely from rest so it would be traveling at 30 m/s the instant it hits the ground? [Hint: This is a free-fall question. g = 10m/s2]
1 second
2 seconds
3 seconds
4 seconds
As shown in the diagram below, a rope attached to a 80.0 N crate is used to exert a force of 45 newtons at an angle of 65 degrees above the horizontal (horizontal component = 19 N, vertical component = 41 N). If the crate is moving with constant velocity what is the force of friction between the crate and the floor?
19 N
41 N
45 N
Cannot be determined without other information.
As shown in the diagram below, a rope attached to a 80.0 N crate is used to exert a force of 45 newtons at an angle of 65 degrees above the horizontal (horizontal component = 19 N, vertical component = 41 N). What is the normal force on the crate?
(Hint vertical forces are balanced so if the string is pulling 41 up, but the weight is 80 down. Balance the forces.)
35 N
39 N
61 N
80 N
A ball is thrown straight upward from the surface of Earth. Which statement best describes the ball's velocity and acceleration at the top of its flight?
Both velocity and acceleration are zero.
Velocity is zero and acceleration is nonzero.
Velocity is nonzero and acceleration is zero.
Both velocity and acceleration are not zero.
An object is moving with constant speed in a circular path. The object's centripetal acceleration remains constant in
magnitude, only
direction, only
both magnitude and direction
neither magnitude nor direction
How would the mass and weight of an object on the Moon compare to the mass and weight of the same object on Earth?
Mass and weight would both be less on the Moon.
Mass would be the same but weight would be less on the Moon.
Mass would be less on the Moon and weight would be the same.
Mass and weight would both be the same on the Moon.
The diagram above shows a box sliding down an incline at constant velocity. Which arrow represents the direction of the frictional force acting on the box?
A
B
C
D
Which diagram represents the directions of the velocity, v, and
acceleration, a, of a toy car as it moves in a clockwise, horizontal,
circular path at a constant speed?
The graph below represents the relationship between velocity and time of travel for a toy car moving in a straight line. The shaded area under the line represents the toy car's-
Momentum
acceleration
displacement
average speed
A ball is thrown off an 8 m cliff with a horizontal speed of 5 m/s and falls a distance of d away from the cliff and takes a time of t to fall. If the initial horizontal speed is doubled, what would happen to the distance the ball traveled from the cliff?
d
d/2
2d
4d
A ball is thrown off an 8 m cliff with a horizontal speed of 5 m/s and falls a distance of d away from the cliff and takes a time of t to fall. If the initial horizontal speed is doubled, what would happen to the time of flight of the ball?
t
t/2
2t
4t
Three equal magnitude forces act on the box shown. The is one upward force, one downward force, and one rightward force. Which of the following statements must be true based on this information?
- The box must have a rightward component of velocity.
- The box has no vertical component of velocity.
- The acceleration of the box is directed to the right.
- The velocity of the box is changing with time.
1 and 2 only
1 and 3 only
3 and 4 only
1 and 4 only
Which pair of graphs below shows the distance traveled versus time and the speed versus time for an object uniformly accelerated from rest starting at time t = 0?
The forces acting upon an object are BALANCED. Therefore, one can be absolutely certain that the object ____.
is at rest
is moving and moving with a constant velocity
has a velocity of 0 m/s
is not accelerating
A quiet moment during a test is interrupted as a physics book falls from a table and strikes the floor. The reaction force to the force of the floor pushing upwards on the book (when it hits the ground) is ____.
the force of the Earth pulling the book downwards
the force of the book upon itself
the force of the floor pushing down on the Earth
the force of the book pushing down on the floor
A car is moving at a constant velocity of 20 m/s when the driver hits the brakes because she sees an animal run across the street in front of the car. If the car experiences an acceleration of -2.5 m/s2 and the driver brakes for 2 seconds before taking her foot off the brake pedal, how fast will the car be moving after braking?
15 m/s
17.5 m/s
22.5 m/s
25 m/s
In a physics demonstration, two teams of equal-mass students are placed on each of two identical carts. A student on Cart A pushes upon Cart B. Which of the following statements describes the resulting motion of the two carts?
Cart A will remain stationary; cart B will be propelled rightward.
Cart A will move backwards slightly; cart B will be propelled rightward with a considerably greater speed.
Cart B will move forward slightly; cart A will be propelled leftward with a considerably greater speed.
Cart A and Cart B will move away from each other with the same speed.
A 7.0-kilogram cart, A, and a 3.0-kilogram cart, B, are initially held together at rest on a horizontal, frictionless surface. When a compressed spring attached to one of the carts is released, the carts are pushed apart. After the spring is released, the speed of cart B is 6.0 meters per second, as represented in the diagram below. Which cart experiences a larger average force during the explosion?
Cart A, because it has a larger mass
Cart A, because the spring from Cart B pushes on it
Cart B, because it has a smaller mass
Each cart experiences the same average force
Two carts with masses of 0.5 kg and 1.0 kg are positioned next to one another on a low-friction track. A spring-loaded plunger is released, forcing the carts away from one another in an explosion. How does the force acting upon the 0.5-kg cart compare to the force that acts upon the 1.0-kg cart?
Both carts experience the same force.
The force on the 0.5-kg cart is twice the strength as the force on the 1.0-kg cart.
The force on the 0.5-kg cart is one-half the strength as the force on the 1.0-kg cart.
The force on the 0.5-kg cart is one-quarter the strength as the force on the 1.0-kg cart.
A block of mass M is connected to spring on a frictionless surface. When the block is moved to the left so that the spring is compressed, the potential energy is PE. Another block with a mass of 3M is attached to the same spring and compressed the same mount. What is the potential energy stored for the block of 3M?
1/3 PE
PE
3 PE
9 PE
A bowling ball is initially at rest before it is dropped to ground from a height of H. Which two energy bar charts show the mechanical energy of the bowling ball right before it falls and when it is halfway to the ground?
Workers are moving a new couch into a home. They must take the couch up 3 meters of stairs. Which of the following frictionless ramps would require the least amount of effort force.
Two students are moving large boxes across a horizontal, frictionless floor. The students apply horizontal forces of the same magnitude over a distance of 10 m. Box A has a mass of 100 kg and Box B has a mass of 200 kg. Compare the velocities and kinetic energies of the two boxes after traveling the 10 m.
Box A will have the same velocity and less KE
Box A will have the same velocity and the same KE
Box A will have more velocity and more KE
Box A will have more velocity and the same KE
A spring stores 40.0 joules of elastic potential energy when it is compressed 0.20 meter. How much energy will be stored when the spring is compressed by 0.1 meter?
5 J
10 J
20 J
40 J
As a student walks downhill at constant speed, his gravitational potential energy –
increases and his kinetic energy increases
increases and his kinetic energy remains the same
decreases and his kinetic energy increases
decreases and his kinetic energy remains the same
A person on a ledge throws a ball vertically downward, striking the ground below the ledge with 200 joules of kinetic energy. The person then throws an identical ball vertically upward at the same initial speed from the same point. What is the kinetic energy of the second ball when it hits the ground? [Neglect friction.]
200 J
Between 200 - 400 J
400 J
More than 400 J
An object is thrown straight upward. Which graph best represents the relationship between the object's kinetic energy and the height of the object above its release point? [Neglect friction.]
Two construction cranes are used to lift different loads of bricks the same vertical distance. The first crane lifts 800-kilograms of bricks in 20.0 seconds and the second crane lifts 1200-kilograms of bricks in 40.0 seconds. Which of the following explains which crane generated the higher power rating?
The first crane, because it lifts a smaller mas of bricks
The first crane, because it lifts the bricks in a shorter time
The second crane, because it lifts a larger mass of bricks
The second crane, because it lifts the bricks in a larger time
Two pulses approach each other in a uniform medium, as represented in the diagram below.Which diagram best represents the superposition of the two pulses when the pulses overlap?
A wave generator produces straight, parallel wave fronts in a shallow tank of uniform-depth water. As the frequency of vibration of the generator increases, which characteristic of the wave will always decrease?
Amplitude
Wavelength
Phase
Speed
In the diagram, X represents a single particle of a spring. Which diagram represents the motion of particle X as a longitudinal wave passes through the spring toward the right?
The diagram below represents the wave fronts produced by a point source moving to the right in a uniform medium. Observers are located at points A and B. Compared to the wave frequency and wavelength observed at point A, the wave observed at point B has a
higher frequency and a shorter wavelength
higher frequency and a longer wavelength
lower frequency and a shorter wavelength
lower frequency and a longer wavelength
A mass-spring system is set to oscillate in periodic motion. If the mass of the spring is doubled, what would happen to the period of the mass-spring system?
The Period Increases
The Period Decreases
The Period Remains the Same
Not enough information
A simple pendulum and a mass-spring are both oscillating with a period of 1 sec. If both systems are taken to the moon (acceleration of gravity roughly 1/6 that of Earth) how will the period of each system change?
No Change to Pendulum Period; Increase to Mass-Spring Period
Increase to Pendulum Period; No Change to Mass-Spring Period
Increase to BOTH Pendulum Period and Mass-Spring Period
No Change to BOTH Pendulum Period and Mass-Spring Period
A loud buzzer is swinging like a pendulum. An observer is near one end of the buzzer's path, as shown below. Which of the following describes and explains what the observer hears as the buzzer moves to the left?
a lower-pitched buzz than the buzzers normal sound because the sound waves are arriving less frequently.
a higher-pitched buzz than the buzzers normal sound because the sound waves are arriving more frequently.
a lower-pitched buzz than the buzzers normal sound because the velocity of the sound wave is reduced by the velocity of the swinging buzzer.
a higher-pitched buzz than the buzzers normal sound because the velocity of the sound wave is increased by the velocity of the swinging buzzer.
Each of the following illustrations shows the movement of a 1 kg object. Which of these examples is an example of simple harmonic motion?
A person applies a horizontal force to push a cart starting from rest. The applied force is shown in the Force-distance graph above. The sled experiences 2 N of Friction force.
A. Describe the motion of the cart from 6 to 8 meters.
constant velocity
speeding up
slowing down
at rest
A person applies a horizontal force to push a cart starting from rest. The applied force is shown in the Force-distance graph above. The sled experiences 2 N of Friction force.
B. How much Work does the person do on the cart during the first 6 m trip of the trip?
13 J
18 J
3 J
9 J
A 10 kg block is pushed up a 3.0 m high incline as shown. The block is pushed a distance of 15.0 m up the incline. What is the gravitational energy of the block at the top of the incline? Use g=10 m/s2
0 J
30 J
150 J
300 J
The box in the diagram above is moving to the right. The applied force is 50N (x-component = 40 N, y-component = 30 N). If the box is slowing down then the friction force must be ...
Equal to 40 N
Greater than 40 N
Equal to 50 N
Greater than 50 N
