If you roll a ball across the carpet, which forces will cause it to slow down and then stop?

What is the unit for force?

What is a force?

What causes a backpack full of books to feel heavy when you lift it?

Which unit should be used to measure mass (the amount of matter an object contains)?

Forces can cause objects to change its:

When an object is not moving the forces are said to be:

If three balls of different materials were dropped at the same time from the same height,

which would hit the ground first? (Assume there is no air resistance.)

What happens when two forces act in the same direction?

The force that one surface exerts on another when the two rub against each other is called:

Parachutes slow skydivers to a safer terminal velocity because parachutes

Which type of elastic force is present in the strings on a guitar?

Solve for the resultant force:

Solve for the resultant force:

Solve for the resultant force:

The size of the force of gravity between two objects depend on:

This refers to how strongly gravity is pulling an object down (measured in newtons).

This refers to changing an object shape to reduce air or water resistance.

Who developed the theory of gravity

Which of the following has the strongest gravitational pull?

There is no gravity in space.

All objects – even people – are attracted towards each other by gravity.

All surfaces create friction on an object moving over them.

Friction produces heat.

An person's mass changes as he moves from one planet to another.