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Friction Inclines

Authored by Charles Martinez

Physics

11th - 12th Grade

NGSS covered

Friction Inclines
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21 questions

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1.

MULTIPLE CHOICE QUESTION

20 sec • 1 pt

Media Image

Which of the following is the best expression for the Normal Force?

FN = mg cos(ϴ)

FN = mg sin(ϴ)

FN = mg sin(180-ϴ)

FN = mg cos(90-ϴ)

Tags

NGSS.HS-PS2-1

2.

MULTIPLE CHOICE QUESTION

20 sec • 1 pt

Friction acts in a direction ___________ to the object's direction of motion.

similar
opposite
parallel
west

Tags

NGSS.HS-PS2-1

3.

MULTIPLE CHOICE QUESTION

10 sec • 1 pt

Normal force is [ ]to the surface that object contacts.

parallel

perpendicular

4.

MULTIPLE CHOICE QUESTION

20 sec • 1 pt

What are the units on the coefficient of friction?

none
Newtons
meters
kilograms

Tags

NGSS.HS-PS2-1

5.

MULTIPLE CHOICE QUESTION

15 mins • 1 pt

A box weighing 46 newtons rests on an incline that makes an angle of 25° with the horizontal. What is the magnitude of the component of the box’s weight perpendicular to the incline?

19N
21N
42N
26N

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

When the sum of all the forces acting on a block on an inclined plane is zero, the block

must be at rest
must be accelerating
may be slowing down
may be moving at a constant speed

Tags

NGSS.HS-PS2-1

7.

MULTIPLE CHOICE QUESTION

15 mins • 1 pt

An 8.0-newton block is accelerating down a frictionless ramp inclined at 15° to the horizontal. What is the magnitude of the net force causing the block’s acceleration?

0N
2.1N
7.7N
8.0N

Tags

NGSS.HS-PS2-1

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