Artificial Satellite Basics

Satellite refers to any project that is orbiting earth, sun or other planetary bodies. Satellites can be artificial or natural. The artificial satellites basically work on principle of projectiles. The only force that works on satellites is gravity. Once launched ..

Kepler’s Laws of Planetary Motion & Newton’s Law of Gravitation

In the early 1600s, Johannes Kepler proposed three laws of planetary motion as follows: Kepler’s First law (Law of orbits) Each planet moves around the sun in an elliptical orbit with the sun at one of its foci. An ellipse ..

Horizontal Projectile Motion: Physics Notes

When an object is thrown from horizontal at an angle θ except 90°, then it will follow a trajectory and the motion is called projectile motion.  A horizontally thrown ball and a bullet fired from a rifle held horizontally are ..