Imagine you are throwing a stone towards the sky. Does it move in a straight line? does it reach back to the same point from where you have started throwing? Well, the answer is no becasue the motion here is a forward and upward in nature, resulting in reverse U-shaped motion called projectile motion. Projectile motion is the result of 2 directional simultaneous movement. The 2 movements are the independent rectilinear motions. It is responsible for the horizontal forward and upward motion of the object along the X-axis and after reaching its peak, there is a downward movement forming a parabolic curve. In the projectile motion, the object is called a projectile, and its path is called its trajectory.
Definition
When an object is thrown upwards at an angle to the horizontal/vertical line, it takes a parabolic path. This is called projectile motion. The only force acting on the object is the gravitational force. So a projectile motion is the combination of 2 components in the horizontal and vertical directions.
Trajectory in a projectile motion |
The time taken for the complete motion is called the time of flight and is two times the above, due to the symmetry of the motion. Considering the horizontal motion of the object, the range (R) is calculated as