1. Gravity
Gravity

2. As a review.....
A force is a push or pull, or any action that has the ability to change motion.

3. Inertia
Resistance of any physical object to any change (motion, speed, velocity, rest).
It is a tendency for an object to travel in a straight line at a constant velocity

4. Force=mass x acceleration
Momentum = Force
Calculating the force of an object we need its
Mass and acceleration
Force=mass x acceleration
F= m x a

5. Calculating Acceleration
acceleration = Vf-Vi
time
like = mph/seconds

6. 1) Gravity Force of attraction between objects due to their masses.
Gravity occurs no matter the size of the objects

7. Gravity has Rules
Gravitational force is small between objects with small masses
Force is larger between objects with large masses.
If distance is increased, gravity will decrease.

8. All objects have gravity
Bigger objects have a stronger gravitational force
Closer objects have a stronger gravitational force

9. Mass vs. Weight The force of gravity on an object is called weight.
(Mass = how much stuff an object is made of)
(Weight = the force of gravity pulling on that stuff)

10. Weight
A 10-kilogram rock has a mass of 10 kilograms no matter where it is in the universe.
A 10-kilogram rock’s weight however, can vary greatly depending on where it is.

11. Terminal velocity
Terminal velocity = point you stop accelerating to earth as you fall down
Gravity accelerates you towards the earth but the air pushes you back up creating drag.
Terminal velocity= 54 meters/second