Friction Inclines

  A 220 Kg crate is pushed horizontally with a force of 700 N. If the coefficient of kinetic friction is 0.20, calculate the acceleration of the crate.   

• 1.02 m/s²
• 1.22 m/s²
• 1.42 m/s²
• 1.62 m/s²

Tags

NGSS.MS-PS2-2

 What is the force of friction between a block of ice that weighs 950 N and the ground if μ = .12? 

• 65 N
• 226 N
• 175 N
• 114 N

What are the units on the coefficient of friction?

• none
• Newtons
• meters
• kilograms

Assuming both objects are at rest, which object is more massive? M1 or M2?

• M1 is more massive
• M2 is more massive
• both M1 and M2 are the same mass

Assuming both objects are at rest, which side of the string has more tension?

• There is more tension on the side by M1
• There is more tension on the side by M2
• The tension on both sides is the same

Tags

NGSS.HS-PS2-1

To find the normal force

• mg
• sin(θ)mg
• cos(θ)mg
• tan(θ)mg

Tags

NGSS.HS-PS2-1

The force that opposes the force of gravity is called...

• force of acceleration
• normal force
• dissipated force
• irregular force

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

A 80 kg skydiver is free falling at a constant velocity of 19 m/s. What is the net (total) force acting on her?

• 1,520 N
• 0 N
• 4.21 N
• Not enough information to answer

Tags

NGSS.MS-PS2-2

NGSS.MS-PS2-4

A book is pushed across the table. It has a friction force of 50 N and a coefficient of friction of 0.30. Find the value normal force.

• 16.7 N
• 166.67 N
• 15 N

Tags

NGSS.MS-PS2-2