AP Physics Friction

Air resistance is a type of...

• motion

• acceleration

• velocity

• friction

If there is no friction, a = 

• 9.8 m/s/s

• 3.35 m/s/s

• 8.37 m/s/s

• 9.21 m/s/s

Tags

NGSS.HS-PS2-1

If the force needed to push a box is 30 N, what is the force felt by the person from the box? 

• 100 N

• 25 N 

• 30 N

• 16 N

Tags

NGSS.MS-PS2-1

Which of these is a correct sum statement for Fx?

• Fa - Ff = ma

• Fnet = Ff

• Fn/Fg

• Fa = ma

Tags

NGSS.HS-PS2-1

Is it possible to be moving to the left like this and have friction in that direction?

• Yes. You have negative acceleration.

• Yes. You have a constant velocity

• No. The force vectors must always point in the direction of motion

• No. You have negative acceleration.

Tags

NGSS.MS-PS2-2

NGSS.MS-PS2-1

The box on the incline is at rest due to friction. Which of these calculations would allow you to get the frictional force?

• mg cos theta

• mg sin theta

• normal force

• mg

Tags

NGSS.HS-PS2-1

The force that opposes motion is

• Normal

• Friction

• Weight

• Applied

A force of 8 Newton’s is applied to a crate so that it moves at a constant velocity of 1.5 m/s. What is the magnitude of the frictional force?

• 1.5 N

• 8 N

• 12N

• 0 N

Tags

NGSS.MS-PS2-2

What's happening in this FBD?

• Forward acceleration

• Braking

• at rest

• constant velocity

Tags

NGSS.MS-PS2-2

When a student stands on a rotating table, the frictional force exerted on the student by the table is

• greater in magnitude than the frictional force exerted on the table by the student

• less in magnitude than the frictional force exerted on the table by the student

• equal in magnitude than the frictional force exerted on the table by the student

• directed away from the center of the table