A particle moving under the combined effect of vertical and horizontal forces, is called a projectile. The following terms are commonly used in projectiles:

* 1. Trajectory.* It is the path traced by a projectile in the space.

**It is the velocity with which a projectile is projected.**

*2. Velocity of projection.***It is the angle,with the horizontal,at which the projectile is projected.**

*3. Angle of projection.***It is the total time taken by a projectile, to reach maximum height and to return back to the ground.**

*4. Time of flight.**It is the distance between the point of projection and the point where the projectile strikes the ground.*

**5. Range.**