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What type of friction is not moving?

• static
• sliding
• fluid
• rolling

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

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?

• 
• 
• 
• 

What law is best described by inertia?

• 1st
• 2nd
• 3rd
• law of conservation of mass

What law is best described

• 1st

• 2nd

• 3rd

• law of motion

What law is best described

Equal and Opposite

• 1st

• 2nd

• 3rd

• speed

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