Friction and Gravity

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

Two factors that affect friction

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

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

• opposite
• same

 What is the unit that measures force?

• Weight
• Net force
• Newton
• Kilogram

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.

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.

If you kick a soccer ball, it goes up to a certain distance and stops. This happens due to

• gravity

• magnetism

• friction

• weight