Free Printable AP Physics 1 Dynamics Review #1

Worksheets

AP Physics 1 Dynamics Review #1

Total questions: 36

Worksheet time: 38mins

Name

Class

Date

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

The Earth pulls downward on a pingpong ball with a force of 1N. If this is the "action" force, what is the "reaction" force?

The ground exerts a force of 1N on the ping pong ball

The ping pong ball exerts a force of 1 N on the Earth

The ping pong ball pushes down on the earth with a force of 1N

The is no reaction force when a gravitational force is involved

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

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 μ_k = 0.65 and μ_s = 0.7, acceleration would be equal to

0 m/s/s

9.8 m/s/s

3.35 m/s/s

-2.63 m/s/s

If there is no friction, then the acceleration would be equal to

sin(θ)mg

sin(θ)g

What is the coefficient of static friction if it takes 44 N of force to move a box that weighs 86 N?

0.78

0.51

0.78 N

0.58 N

A 80 kg skydiver is free falling at a constant velocity of 19 m/s. What is the net (total) force acting on her?

1,520 N

0 N

4.21 N

Not enough information to answer

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

10.

A man weighing 800 Newtons is standing in an elevator. If the elevator rises with an acceleration of 0.5 meters per second², the force exerted by the elevator on the man will be

400 N

800 N

1200 N

1000 N

11.

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.

12.

Which of these is a correct sum statement for Fx?

Fa - Ff = ma

Fnet = Ff

Fn/Fg

Fa = ma

13.

True or False

Forces cause motion.

True. Every motion requires a force.

True. Every force causes motion.

False. Motion can occur when there is no net force

False. Only net forces cause motion.

14.

True or False

Forces cause acceleration.

True. Every acceleration requires a force.

True. Every force causes acceleration.

False. Acceleration can occur when there is no net force

False. Only net forces cause acceleration.

15.

A block of weight W is pulled along a horizontal surface at constant speed v by a force F, which acts at an angle Θ with the horizontal, as shown. The normal force exerted on the block by the surface has magnitude_____.

greater than W

greater than 0 but less than W

equal to W

16.

Terry enacts an applied force on a wall. The wall will enact a(n) ______ force on Terry.

tension

normal

electromagnetic

applied

17.

The force diagram above shows a box accelerating to the right on a horizontal surface of negligible friction. The tension T is exerted at an angle of 30° above the horizontal. If μ is the coefficient of kinetic friction between the box and the surface, which of the following is a correct mathematical equation derived by applying Newton’s second law to the box?

18.

The velocity is always _____ to the line of a circle.

outwards

towards the center

tangent

faster

19.

Which statement is true about an object that is traveling in uniform circular motion?

The speed of the object varies.

The net force on the object is directed toward the center of the circular path.

The direction of the object's velocity is constant.

The net force on the object is directed away from the center of the circular path.

20.

A curved groove is place on the top of a level table as shown in the diagram. A ball is pushed in the groove at P so that it leaves at Q. Which picture shows how the ball will move when it leaves the groove at Q?

21.

What happens to the centripetal force exerted on an object if you triple the velocity?

it increases to 3X

it decreases to 6X

it increases to 6X

it increases to 9X

22.

A satellite of mass m and speed v orbits the Earth at a distance r from the center of the Earth. The gravitational acceleration due to the Earth at the satellite is equal to.

v/r

v²/r

mv/r

mv²/r

23.

Force of gravity is inversely proportional to

Mass

Weight

Distance

Time

24.

If the force of gravity has been reduced by 1/4 which could be true?

Mass was increased 4 times

Mass was decreased 2 times

Distance was increased 4 times

Distance was doubled

25.

Which force is responsible for keeping a satellite in orbit around the Earth?

Tension

Gravitational force

Friction

Net force

26.

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

27.

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

28.

What is the coefficient of static friction if it takes 44 N of force to move a box that weighs 86 N?

0.78

0.51

0.78 N

0.58 N

29.

Which is the proper equation for the force of static friction?

$F_s\ =\ \mu_s\ F_g$

$F_s\ \ge\ \mu_k\ F_N$

$F_s\ \le\ \mu_s\ F_g$

$F_s\ \le\ \mu_s\ F_N$

30.

For a system in equilibrium (ΣF = 0), which of the following is NOT true?

The horizontal and vertical components of all external forces cancel out.

The system must be traveling at a constant velocity.

The system has no internal forces.

The system is not accelerating.

31.

Which of the following correctly ranks the magnitude of forces acting on this object?

Fg<Fn<Ff<Fa

Fa<Ff<Fn<Ff

Fg = Fn <Ff< Fa

Ff < Fg = Fn < Fa

32.

If F is force, k is spring constant and x is extension, Hooke's Law tells us that:

F=k/x

x=Fk

k=Fx

F=kx

33.

A stiff material has a:

high spring constant

low spring constant

spring constant of any value

spring constant which is difficult to predict

34.

Which of the following springs is the stiffest?

A spring that requires a froce of 2000 N to compress it by 6.8 m.

A spring that requires a force of 4000 N to stretch it by 9.0 m.

A spring that requires a force of 8000 N to compress it by 45 m.

A spring that requires a force of 4800 N to stretch it by 14 m.

35.

A net force of 430 N acts to stretch an extension spring. How far will the spring stretch if its spring constant is 700 N/m?

43.9

0.307 m

1.63 m

0.614 m

36.

A spring has a spring constant of 5N/cm. What is its extension when loaded with 15N?

4cm

5cm

3cm

Reset

AP Physics 1 Dynamics Review #1

Total questions: 36

Worksheet time: 38mins

Similar Resources on Wayground