Gravity/Free Fall

1. Gravity/Free Fall By Hunter Boatright

2. Gravity • The Universal Gravitation Equation is F=M1M2/D2. Gravitational force increases as one or both masses increase. Gravitational forces also decrease as the distance between the masses increase. All matter is affected by gravity. Gravitational force increases as mass increases. The gravitational force between most objects around you is relatively small.

3. Free Fall • Free Fall is when gravity acts on an object. Free fall acceleration results from gravity. Gravity is approximately 9.8 m/s/s. The free fall acceleration of an object is directed toward the center of the Earth. Free fall acceleration near Earth’s surface is constant.

4. Terminal Velocity • Terminal velocity is the constant velocity of a falling object when the force of air resistance is equal in magnitude and opposite in direction to the force of gravity. For example, when air resistance and the force of gravity are equal, skydivers reach a terminal velocity of about 320 km/h (210 mi/h).

5. Projectile Motion • Projectile motion is the curved path that an object follows when thrown, launched, of otherwise projected near the surface of Earth; the motion of objects that are moving in two dimensions under the impulse of gravity.