Physics
part-01-theory-_125---140_ The motion of an object is called two dimensional, if two of the three co-ordinates required to specify the position of the object in space change time. In such a motion, the object moves in a plane. For example, a billiard ball moving over the billiard table, an insect crawling over the floor of a room, earth revolving around the sun etc. Two special cases of motion in two dimension are 1. Introduction of Projectile Motion A hunter aims his gun and fires a bullet directly towards a monkey sitting on a distant tree. If the monkey remains in his position he will be safe but at the instant the bullet leaves the barrel of gun, if the monkey drops from the tree, the bullet will hit the monkey because the bullet will not follow the linear path. If the force acting on a particle is oblique with initial velocity then the motion of particle is called projectile motion. 2. Projectile A body which is in fl...