Friction and Gravity

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

• similar
• opposite
• parallel
• perpendicular

 What is the unit that measures force?

• Weight
• Net force
• Newton
• Kilogram

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.

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

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.

Which of the following will not change in different gravitational fields?

• weight
• force
• mass
• pounds

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

• gravity
• friction
• mass
• weight

The force that pulls objects towards each other.

• gravity
• friction
• mass
• weight

The amount of matter in an object

• gravity
• friction
• mass
• weight

The measure of the force of gravity on an object.

• gravity
• friction
• mass
• weight