1. Newton’s Law of Universal Gravitation
Gravity

2. Bellringer
Pick up a Gravity Reinforcement Worksheet from the front table.
You have 5 minutes from the time the bell rings to complete this worksheet.
Take out your planners and write down your homework.

3. Objectives
TLW list the cause & effect that relate to mass & distance with the force of gravity.
TLW relate centripetal force & gravity with objects in orbit.
TLW make calculations of their weight using Earth’s & other planets’ gravity.

4. Terms Force: Any push or pull exerted on an object.
Mass: The amount of matter in an object. (pg.24)
Weight: The force of gravity on an object.
*Do not mix up mass & weight. On the moon, your weight will change, but your mass remains the same.
Inertia: The tendency of an object to resist a change in motion.