Understanding Gravity
by Ron Kurtus (updated 16 March 2023)
Gravity is the force that pulls objects toward the Earth. It is an approximation of Gravitation, which is the force that attracts matter and all objects toward each other.
Gravity is a subject in Physics, which in turn is a branch of Physical Science. There is a great need for people who understand scientific principles and know how to think logically. Your knowledge and skills in these areas can help you excel in school, advance your career or improve your business.
The purpose of these free online lessons is to give you a start at improving your scientific knowledge of Gravity that will help you become a champion in the field.
Gravity Contents
Overview
Basics
Convention for Direction in Gravity Equations
Equivalence Principle of Gravity
Confusion about Mass and Weight Units
Derivations of equations
Overview of Gravity Equation Derivations
Derivation of Velocity-Time Gravity Equations
Derivation of Displacement-Time Gravity Equations
Falling objects
Overview of Gravity Equations for Falling Objects
Velocity Equations for Falling Objects
Displacement Equations for Falling Objects
Projected downward
Overview of Gravity Equations for Objects Projected Downward
Velocity Equations for Objects Projected Downward
Displacement Equations for Objects Projected Downward
Projected upward
Overview of Gravity Equations for Objects Projected Upward
Velocity Equations for Objects Projected Upward
Displacement Equations for Objects Projected Upward
Gravity and energy
Overview of Energy from Gravity
Energy of Objects Projected Downward
Gravity and work
Work by Gravity Against Inertia and Air
Gravity applications
Effect of Gravity on Sideways Motion
Effect of Gravity on an Artillery Projectile
Effect of Gravity on a Rocket Projectile