AP Physics FBD

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 net force?

• 1.5 N

• 8 N

• 12N

• 0 N

Tags

NGSS.MS-PS2-2

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

Why is there no net force in the middle of this graph? This is F to t for an elevator.

• There is. You can't trick me.

• The elevator is at rest

• The elevator is accelerating

• The elevator has a constant speed

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

Is this object in equilibrium?

• Yes and it's moving right

• Yes and its at rest

• No, it's accelerating right

• No, it's at rest

Which of these is a correct sum statement for Fx?

• Fa - Ff = ma

• Fnet = Ff

• Fn/Fg

• Fa = ma

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

What's happening in this FBD?

• Forward acceleration

• Braking

• at rest

• constant velocity

Tags

NGSS.MS-PS2-2

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-PS2-1

NGSS.MS-PS2-2

Here are 3 FBD diagrams for an elevator. Consider them to be A, B, C. Which one shows an elevator accelerating upward?

• A

• B

• C

• none of these

Tags

NGSS.MS-PS2-2

Here are 3 FBD diagrams for an elevator. Consider them to be A, B, C. Which one shows an elevator at rest?

• A

• B

• C

• none of these

Here are 3 FBD diagrams for an elevator. Consider them to be A, B, C. Which one shows an elevator moving upward but braking?

• A

• B

• C

• none of these

Tags

NGSS.MS-PS2-2

NGSS.MS-PS3-1

NGSS.MS-PS3-5