Gravity and Friction

Lesson 3 - Gravity and Motion

Vocabulary Choiceboard

Gravity

The force that attracts all objects towards eachother

Law of Universal Gravitation

This law states that ever object in the universe attracts every other object

Mass

the amount of matter in a object

Weight

Weight is the measure of the force of gravity on an object

inertia

Inertia is the tendency of an object to resist a change in motion

Newton's first law of motion

• says that an object at rest will stay at rest and an object in motion will stay in motion with a constant speed and direction unless acted on by a force

• (from science book not plagiarized)