Friction

What is a friction force  acting on an NON- moving object.

• Static friction 
• Fuild friction 
• Rolling friction 
• Sliding Friction 

What type of fluid friction acts on an object moving through the air?

• Friction 
• Normal Force 
• Gravity 
• Air resistance 

Tags

NGSS.MS-PS2-2

Friction is a force that acts in a(n) ___________ direction relative to a moving object.

• similar
• opposite
• parallel
• perpendicular

As the child moves down the slide, they mostly experience the effect of ___________.

• Rolling Friction
• Sliding Friction
• Fluid Friction
• Static Friction

Tags

NGSS.MS-PS2-2

The force that two surfaces exert on each other as they rub against each other.

• gravity
• friction
• mass
• weight

Two factors that affect friction

• mass and distance
• types of surfaces and how hard they are pushed together
• force and distance
• mass and direction

Friction of an object rolling across a surface.

• sliding friction
• rolling friction
• fluid friction
• static friction

Tags

NGSS.MS-PS2-2

The force of friction acts in the ___________ direction of the motion

• opposite
• same

Which type of friction occurs when objects are not moving?

• static
• sliding
• fluid
• rolling

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

• Force and roughness between surfaces
• hills and valleys and how smooth or rough the surface is
• Amount of force 
• The force and the weight exerted on the surfaces