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WorksheetsAP Physics 1 All Units Review
Total questions: 28
Worksheet time: 14mins
A block slides to the right on a rough horizontal surface. Which of the following statements about the frictional force exerted on the block is true?
There are only microscopic interactions.
It doesn't depend on the materials of the block.
Gravitational interactions between the atoms in the block.
Sum of all the microscopic contact forces between the bottom of the block and the surface.
What is the area under the curve of an acceleration vs time graph indicate?
final velocity of an object
initial velocity of an object
Change in velocity
The average velocity of an object
Which doesn't stay constant when an object is thrown off the cliff?
x-component of velocity
y-component of velocity
acceleration
net force
A box sliding down an inclined plane attains a velocity of 27 m/s in 3 seconds from rest. Find the acceleration.
7km/min
1m/s^2
3km
9m/s^2
A car drives down an 25 degree incline at a constant speed. The force of friction keeping the car from accelerating is 500N. The weight of the car is about....
90000N
1200N
500N
700N
The net force of an object is 0 when its...
accelerating
in projectile motion
moving at a constant speed of is at rest
got a frictional force acting one it
It pool balls push off each other while playing billiard, how do their accelerations compare?
They will accelerate in the same direction with different magnitudes depending on the mass.
They have equal magnitudes but in the opposite directions if their masses are equal
They cancel each other out so there is no acceleration
The ball will accelerate faster than another
A force of 8 Newton’s is applied to a bow so that it moves at a constant velocity of 1.5 m/s. The net force is...
2N
0N
7N
800N
What is the relationship between gravitational force and gravity?
directly proportional to m
directly proportional to r^2
inversely proportional to r^2.
directly proportional to M
A ball is attached to a string that is 1.5m long. It is spun so that it completes two full rotations every second. What is the centripetal acceleration felt by the ball?
18m/s^2
78m/s^2
237m/s^2
0m/s^2
A 25 kilogram boy is riding a merry go round which has a radius of 5 meters. The velocity of the boy is 6m/s. What is the centripetal force on the boy?
189N
180N
760N
438N
A truck is driving over a hill at a constant speed. Once the truck has reached the top most point of the hill, what is the direction of the acceleration?
Downwards
Upwards
Behind the truck
In front of the truck
When an apple falls from the tree what happens to its kinetic and potential energies?
PE increases & KE increases
PE increases & KE decreases
KE increases & PE decreases
KE increases & PE increases
A man with mass 50kg is wearing a backpack of mass 5kg and running up a hill with a slope of 30 degrees at a constant velocity of 2m/s. What is the man's power output?
870W
760W
550W
800W
A car is being accelerated along a racetrack with a force of 75 N, but there is a frictional force of 30 N due to the track. What is the kinetic energy after 2 meters of travel?
700J
230
100J
90J
Person A walks up the stair while person B runs up the stairs. Which one required more work?
No work exerted
They required equal amounts of work
Person A
Person B
Cars are equipped with padded dashboards. In collisions, the padded dashboards would be safer that non-padded because...
increase impulse of passenger
decrease impulse of passenger
increase the impact time
decrease the impact time
What happens to the total system momentum when no external forces act on a system?
Oscillates between high and low values
It slowly increases
It slowly decreases
It remains constant
In a closed system where two particles collide head-on elastically on a frictionless surface, how does increasing one particle's mass while keeping initial velocities constant affect total system kinetic energy after the collision?
It decreases inversely proportional to the increase in mass
Increases proportional to increase in mass
The kinetic energy remains unchanged
It decreases because heavier objects have lower recall speeds after collision
A marble of mass 0.1 kilograms falls off a bed with a height of 1.2 meters. What is the impulse on the marble hits the ground?
1.22 N*s
0.49 N*s
1.74 N*s
0.84 N*s
Which quantity is conserved for an ideal spring for an ideal spring-mass oscillating with no external forces applied?
The maximum speed
Total mechanical energy
The maximum speed
Mass of the system
In a pendulum swing, what time of energy is at the maximum height?
Kinetic Energy
Gravitational potential energy
Thermal Energy
Chemical Energy
The frequency of an object undergoing simple harmonic motion will increase if
The height increases
The spring constant increases
The amplitude increases
The mass increases
A cart on a spring has a maximum amplitude of 0.5 meters, a spring constant of 1000N/m, and a mass of 250 kilograms. What is the maximum velocity of the cart?
8m/s
4m/s
2m/s
1m/s
If a figure skater pulls her arms in to spin faster, which statement best describes the effect on her rotational kinetic energy?
It remains constant as centripetal force balances centrifugal force
Remains constant because angular momentum is conserved
Increases as rotational inertia decreases
Decreases due to conservation of mechanical energy
A disk rotating counterclockwise slows down as friction acts at its edge; which statement describes how friction affects its angular impulse?
There is equal and opposite angular impulse which increases its counterclockwise-angular momentum
Friction delivers a negative-angular-impulse, decreasing both rotation rate and clockwise-angular-momentum
Friction doesn't deliver any-angular-impulse as there's no change in external forces
Frictions creates positive-angular-impulse, increasing its counterclockwise-angular-momentum
What must remain constant for an object rotating about a fixed axis experiencing no net external torque?
Its moment of inertia even if shape or orientation changes
Its rotational kinetic energy at all points in time
Its tangential speed around its path independent position
Its angular momentum throughout its motion
A solid disk and a hollow cylinder, both with the same mass and radius, and released from rest at the top of an inlined plane; which object reaches the bottom first?
Both objects reach at the same time because they have the same mass
The solid disk
The hollow cylinder
It's impossible to determine without knowing the angle
