Projectile: It is a body, which is small enough to be regarded as particle, which is projected in oblique direction to the direction of gravity. Trajectory: Path traced by the projectile Velocity of projectile: It is the velocity with which the particle was projected Angle of projection: Angle with horizontal, when the particle is projected Range: Distance between the point of projection and the point where it hits a given plane. If the plane is horizontal, then range is called horizontal range Time of flight: Time taken by projectile to complete the particular range