Static/Kinetic Friction

Front

Friction is a force that acts in an ___________ direction of movement.

Back

opposite

Tags

NGSS.MS-PS2-1

Front

Factors affecting the amount of friction between two objects:

• type of surface & pressure applied to the surface
• distance between the objects
• mass of the objects
• temperature of the objects

Back

type of surface & pressure applied to the surface

Front

Which is not a way to reduce friction? Options: Add more force, Add oil or another type of lubricant, Replace rolling with sliding, Smooth the surface

Back

Add more force

Front

What type of friction is shown in this car that is at rest?

Back

static

Front

What is friction?

Back

the resistance of motion when one objects moves in the opposite direction of another

Tags

NGSS.MS-PS2-2

Front

What are 2 factors that determine the amount of friction between 2 objects?

Back

Force and roughness between surfaces

Front

Which of the following is an example of rolling kinetic friction? Options: box sliding across the floor, bike rolling along the road, car skidding to a stop, soccer player making a slide tackle

Back

bike rolling along the road

Front

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

Back

114 N

Tags

NGSS.HS-PS2-1

Front

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

Back

0.51

Front

A box takes 40 N to start moving when the coefficient of static friction is 0.54. What is the weight of the box? Options: 81 N, 18 N, 98 N, 74 N

Back

74 N

Tags

NGSS.MS-PS2-2