Projectile motion

Projectile motion 

Introduction :  previous topic we have studied average and instantaneous velocity and acceleration. In our daily life we come across various motion like throwing a ball, footballer kicking a ball, motion of a giant wheel, etc. This type of motion is a motion in which system perform motion in two direction simultaneously. We are going to study how such type of motion happens in our nature.

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Credit : Phet University of colorado Boulder

Projectile Motion

Projectile Motion: An object thrown in the air with initial velocity in any direction, making some angle with the horizontal, moving freely under the action of gravity is called projectile.

Point of projection: The point from which the body is projected  in air is called as point of projection.

Velocity of projection: The velocity with which a body is projected is called as point of projection.

Angle of projection: The angle made by the velocity of projection with the horizontal is called as point of projection.

Trajectory: The path followed by the projectile in space is called as its trajectory.

Explanation: When projectile motion is formed , the initial velocity (u) is resolved into two components i.e horizontal component (ucosθ) and vertical component (usinθ). The acceleration due to gravity has no acceleration in horizontal direction thus there is no change in horizontal velocity. Thus projectile motion is a combination of two component of a motion  occuring simultaneously. viz: i) a vertical motion with constant acceleration and ii) horizontal motion with constant velocity.

_{│<<<Average velocity and Accelderation│   │Expression for Projectile Motion>>>│} 

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