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HomeHomework HelpphysicsEarth's Gravity

Earth's Gravity

Earth's gravity is a fundamental force that attracts objects towards its center, playing a crucial role in keeping us and objects on its surface. The concept of gravity is significant in Physics as it helps us understand the behavior of celestial bodies, the formation of our planet, and the motion of objects. By studying Earth's gravity, students can gain insights into the underlying principles of gravity and its applications in various fields.

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Physics
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Overview

Earth's gravity is a fundamental force that keeps everything anchored to the planet. It is responsible for the weight of objects and influences various phenomena, from falling apples to the orbits of satellites. Understanding gravity is essential for grasping how objects move and interact in our wor...

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Key Terms

Gravity
The force that attracts two bodies toward each other.

Example: The gravity of Earth pulls objects toward its center.

Mass
The amount of matter in an object, measured in kilograms.

Example: A rock has a mass of 2 kg.

Weight
The force exerted by gravity on an object, calculated as mass times gravitational acceleration.

Example: A 2 kg rock weighs about 19.6 N on Earth.

Free Fall
The motion of an object falling solely under the influence of gravity.

Example: A skydiver in free fall accelerates towards the ground.

Orbit
The curved path of an object around a star, planet, or moon.

Example: The Moon orbits around the Earth.

Acceleration
The rate of change of velocity of an object.

Example: An object in free fall accelerates at 9.8 m/s².

Related Topics

Newton's Laws of Motion
Explore the three laws that describe the relationship between the motion of an object and the forces acting on it.
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Kinematics
Study the motion of objects without considering the forces that cause the motion.
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Astrophysics
Learn about the physics of celestial bodies and the universe, including gravity's role in space.
advanced

Key Concepts

Gravitational ForceMass and WeightFree FallGravity and Orbits