WorksheetsAP Physics Friction
Total questions: 15
Worksheet time: 16mins
A skier is going down a slope at constant speed. The coefficient of friction between the skier and the incline is .61. Find the angle of inclination.
38o
52o
20o
31o
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 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.
If there is no friction, then the acceleration would be equal to
mg
sin(θ)mg
g
sin(θ)g
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
A mass, M, is released from rest on an incline that makes a 40 degree angle with the horizontal. In 5 seconds, the mass is observed to have gone a distance of 2 m. What is the coefficient of kinetic friction between the mass and the surface of the incline?
0.97
0.7
0.86
1.2
2.55
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
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?
