Friction and Gravity

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

• similar

• opposite

• parallel

• perpendicular

What type of friction acts on an object that is not yet moving?

• Static

• Dynamic

• kinetic

• Rolling

The wheels on a moving skateboard most likely experience ____________.

• Rolling Friction

• Sliding Friction

• Fluid Friction

• Static Friction

These swimmers are most likely experiencing _________.

• Rolling Friction

• Sliding Friction

• Fluid Friction

• Static Friction

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

How would the absence of friction affect a marble traveling on a long, straight path?

• The marble’s speed would decrease.

• The marble’s speed would increase.

• The marble would stop immediately. 

• The marble would remain at a constant speed.

Tags

NGSS.MS-PS2-2

Which of the following is an example of rolling friction?

• pushing a box across the floor

• riding a bike down a hill

• a hockey player skidding to a stop

• a soccer player making a slide tackle 

Two factors effecting the magnitude of the force of gravity between 2 objects are...

• mass and distance 

• mass and volume

• distance and weight 

• weight and mass

Tags

NGSS.MS-PS2-4

As mass increases, what happens to the gravitational force?

• It increases.

• It decreases.

• It stays the same.

• It acts as a 3rd degree derivative function.

Tags

NGSS.MS-PS2-4

As the distance between 2 objects increases, what happens to gravitational force?

• It increases.

• It decreases.

• It stays the same.

• Only Mr. Silvio knows what will happen.