WorksheetsAP Physics - Dynamics (Forces)
Total questions: 25
Worksheet time: 24mins
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
Camille launches has a catapult that changes the velocity of a ball (m= 2 kg) from 0 to 10 m/s in one sec. What is the average force that is exerted on the ball during launch?
20 N
5 N
8 N
0.2 N
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
Which of the following is not true about the system?
T3 is equal to the scalar sum of the magnitudes of T2 and T1
T3 is equal in magnitude to Fg
The x- components of the T1 and T2 and equivalent but in opposite directions
The system is in equilibrium.
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 μk = 0.65 and μs = 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
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 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
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.
A net force of 36 N acts on a mass of 9 kg. The resulting acceleration is _____.
6 m/s2
9 m/s2
4 m/s2
0 m/s2
A mass of 15 kg is acted on by two forces, one of which is 15 N due east while the second one is 10 N due north. The acceleration of the mass is
1.67 m/s2, 56.3o north of east.
1.2 m/s2, 33.7 o north of east.
1.67 m/s2, 56.3o north of east.
1.67 m/s2, 33.7 o north of east.
A force accelerates an object of mass M. The same force applied to a second body produces half the acceleration. What is the mass of the second body?
2 M
0.5 M
3 M
4 M
Is it possible for the normal force to be equal to the gravitational force?
Yes. If the surface is horizontal and Fg is perpendicular to the surface.
Yes. If the surface is vertical and Fg is parallel to the surface.
No. FN will always be less than Fg
No. Fg will be less than FN.
Is it possible for the normal force to be zero?
Yes. If the surface is horizontal.
Yes. If the surface is vertical
No. FN will always be less than Fg
No. Fg will be less than FN.
