Gravity Gravity

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

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

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

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

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

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.

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

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)

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.

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