Friction Physics

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

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

• unrelated

• equal

• opposite

• perpendicular

What are the units on the coefficient of friction?

• none

• Newtons

• meters

• kilograms

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

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

the force due to friction on a bike tire is 70 N. If the coefficient of friction of the road is 0.78, what is the mass of the bike?

• 89.7

• 8.97 N

• 8.97 kg

• 54.6 kg

Tags

NGSS.MS-PS2-2

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

• F_N = mg cos(ϴ)

• F_N = mg sin(ϴ)

• F_N = mg sin(180-ϴ)

• F_N = mg cos(90-ϴ)

Tags

NGSS.MS-PS2-2

Air resistance is a type of...

• motion

• acceleration

• velocity

• friction

What is the coefficient of static friction if it takes 44 N of force to move a box that weighs 86 N?

• 0.78

• 0.51

• 0.78 N

• 0.58 N