← Chpt. 3 Gravity Print

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1.
4 basic forces: gravity, electromagnetic force, strong nuclear force, weak nuclear force

2.
centripetal force: acceleration toward the center of a curve or circular path. when water stays in a bucket as you swing it in a circle

3.
Force of Earth's Gravity: Force of gravity (N) = Mass (kg) X acceleration of gravity (m/s2)

F = mg

F = mg

4.
gravity: the attractive force between two objects, which depends on the masses and distance between them

5.
horizontal motion: the forward motion when you throw a ball

6.
Law of Universal Gravitation: this equation allows the force of objects to be determined.

F = (constant) G X ((mass 1) x (mass 2)) /

distance squared

F = (constant) G X ((mass 1) x (mass 2)) /

distance squared

7.
Range of Gravity: as the distance increases between objects, the gravity becomes weaker. however, gravity never disappears, it is a long-range force

8.
vertical motion: the downward motion when gravity pulls the ball to the ground

9.
Weight: the gravitational force exerted on an object

10.
Weight Formula: weight (N) = mass (kg) X acceleration of gravity (m/s2)

W = mg

W = mg

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