There are five main steps to understanding the science of basic physics: mechanics, electromagnetism, waves, optics, and heat. Each of these areas are based around a number of laws developed by certain clever people in the 16th, 17th, and 18th centuries. This article will give you an extremely brief overview of these laws and some ways in which they have been applied to understanding our world.
Steps:
1. Motion of projectiles in two dimensions: A projectile moving with a constant gravitational force, without air resistance, will have a constant acceleration in the direction of this force.
2. Know that this object's horizontal velocity will be constant while the vertical component constantly changing.
3. Newton's first law of motion: An object in uniform motion tends to stay in motion unless acted upon by an external force. Take for example throwing a basketball when there is absolutely no air resistance.
4. Resolve its velocity (not to be confused with acceleration) into horizontal and vertical components.
· In the vertical component, the initial velocity is eventually reduced until it becomes negative (falls towards the earth) because the force of gravity gives it an acceleration towards the earth.
· In the horizontal component, since there is no force acting against it its acceleration will be zero, therefore its velocity remains constant.
Source: www.wikihow.com
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