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WorksheetsAP Physics 1 pre-assessment
Total questions: 62
Worksheet time: 1hrs 14mins
As the angle of the incline increases, what happens to the normal force?
The normal force increases
The normal force decreases
The normal force is not affected by the incline
The normal force is only dependent on the force due to gravity
Given the FBD, which of the following must be true?
The frictional force must be accelerating the system to the left.
The box must be accelerating to the right.
The box must be moving to the right.
The FBD is incorrectly drawn. This situation isn't possible
Which of the following statements is true about the image above?
The accelerations of the blocks will vary according to their mass
The net force acting on each block is the same
The blocks will experience the same acceleration
The 3m box will eat the 2m and the m boxes
Sam is hover boarding down they hall at a constant velocity. Assuming there is friction, which of the following must be true?
The force applied by the board must be greater than the frictional force
The frictional force must equal the force applied by the board
The force applied must equal zero
There is not enough information
If there is no friction, then the acceleration would be equal to
mg
sin(θ)mg
g
sin(θ)g
A man standing on a scale in an elevator notices that the scale reads 40 newtons greater than his normal weight. Which type of movement of the elevator could cause this greater-than-normal reading?
accelerating upward
accelerating downward
moving upward at a constant speed
moving downward at a constant speed
A car travels up a hill at constant speed. Which of the following diagrams best represents the forces acting on the car at this instant?
Three forces of equal magnitude act on the box shown. One force is upward, one downward, and one rightward. Which of the following statements must be true based on this information? Select two answers.
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.
If you rub a balloon with a piece of wool cloth, the balloon will:
Be attracted to the wool cloth
Be repelled by the wool cloth
Have no interaction with the wool cloth
Not enough information is given to determine what will happen
If you rub two balloons with the same piece of wool cloth, the balloons will:
Be attracted to each other.
Repel each other.
Have no interaction.
Not enough information is given to determine what will happen.
Which of the following statements is incorrect?
Two objects with the same type of charge repel each other.
Two objects with opposite types of charge attract each other.
Two objects made of different materials rubbed against each other acquire the same type of charge.
All of these statements are correct.
Two pieces of transparent tape are pulled off a wooden tabletop. When they are brought near each other, they:
Attract each other because they were prepared the same way.
Repel each other because they were prepared the same way.
Have no interaction.
When uncharged bits of paper are brought near a charged comb:
There is no interaction because the paper is not charged.
There is no interaction because the paper is too heavy to move.
There is attraction because the paper is a dielectric.
There is repulsion because the paper is a dielectric.
Which of the following statements is incorrect?
Uncharged dielectrics can be attracted to both negatively and positively charged objects.
Uncharged metals can be attracted to both negatively and positively charged objects.
Uncharged metals will be more attracted to charged objects than to uncharged dielectrics.
All of these statements are correct.
Polarization occurs when:
Electrons move within an atom.
Free electrons move within a solid.
Both answers.
None of the answers.
Which of the following statements is NOT correct about the magnitude of the electric force between two charged objects?
It increases if one of the charges increases.
It increases if the distance between the charges increases.
It increases if both of the charges increase.
It increases if the distance between the charges decreases.
If two charges have an electric force F between them and one of the charges is doubled, the force will be:
Halved
The same.
Doubled
Quadrupled.
If two charges have an electric force F between them and the distance between them is halved, the force will be:
Halved
The same.
Doubled
Quadrupled
The gravitational force be confidently ignored when dealing with atomic size particles because:
It is many orders of magnitude greater than the electric force.
It is many orders of magnitude smaller than the electric force.
There is no gravitational attraction between atomic masses.
A rocket of mass m begins to ascend vertically at v m/s. The work that gravity does on the rocket is:
Negative
Zero
Positive
Undefined
The area under a force-time curve represents:
Change in potential energy
Change in momentum
Change in force
Change in torque
A circular object of radius R has an angular velocity of k rad/s. The angular velocity at a point R/2 is:
2k rad/s
k/2 rad/s
k2 rad/s
k rad/s
If the gravitational force between two masses is F, then by what factor would the distance between the two object need to change if the mass of one of the objects is doubled in order for the force to remain the same?
4
2
21/2
61/2
A quantity that is independent of direction is referred to as a
vector quantity
scalar quantity
Two protons are held a distance d apart. The electrostatic force and the gravitational force that one proton exerts on the other are Fe and Fg, respectively. Which of the following correctly compares the magnitude and direction of these forces?
Fe > Fg, opposite direction
Fe > Fg, same direction
Fe < Fg opposite direction
Fe < Fg same direction
In which of the following situations is the kinetic energy of the object decreasing?
A sphere is dropped from a building.
A satellite is moving in a circular orbit around the earth.
A baseball is heading upward after thrown at an angle.
An elevator is moving upward at a constant velocity.
Shown are six cars that are moving along horizontal roads at specified speeds. All the cars are the same size and shape but carrying different masses. Each car is stopped by colliding with a barrier, and stop in the same distance. Rank the magnitude of the forces to stop each car.
A,B,C,D,E,F
C,D,B,E,F,A
A,F,B,D,E,C
C,E,D,B,F,A
Each figure shows two blocks hanging form the ends of a strong but massless string, which passes over a massless, frictionless pulley. Rank the figures from greatest to least on the net force that accelerates the system of blocks.
F,E,D,C,B,A
F,D,E,C=B,A
E,F,D,C,B,A
E,F,D,C=B,A
Five identical figure T's are constructed from two uniform rods of equal lengths and masses. For each figure, a different axis of rotation in the plane of the paper is indicated by the dotted line. Rank these T figures according to their moments of inertia about the indicated axes, from largest to smallest. Ignore the width of each rod, but not length
A,B,C,D,E
E,D,C,B,A
B,A,D=E,C
A,B,D=E,C
In each of the situations, two conducting spheres of the same size are shown with an initial given number of units of charge. The two spheres are brought into contact with each other. After several moments the spheres are separated. Rank the situations as to the quantity of charge on the left sphere from the highest positive to the lowest negative charge after they have been separated.
F,E,D,C,B,A
F,D,B,C,E,A
A,C,E,D,F,B
A,E,C,B,F,D
If each bulb has a resistance of R, which circuit has an equivalent resistance of 4R/3? Assume the wires have negligible resistance, and the batteries is ideal.
A
B
C
None of them
A 500 gram block is initially moving at -4 m/s. A force then acts on the block as shown in the graph. Determine the velocity at 5 seconds for the block.
12 m/s
10 m/s
8 m/s
6 m/s
4 m/s
