GENERAL KNOWLEDGE

Detailed explanation-1: -The horizontal velocity of a projectile is constant (a never changing in value), There is a vertical acceleration caused by gravity; its value is 9.8 m/s/s, down, The vertical velocity of a projectile changes by 9.8 m/s each second, The horizontal motion of a projectile is independent of its vertical motion.

Detailed explanation-2: -There are the two components of the projectile’s motion-horizontal and vertical motion. And since perpendicular components of motion are independent of each other, these two components of motion can (and must) be discussed separately.

Detailed explanation-3: -Horizontal motion is defined as a projectile motion in a horizontal plane depending upon the force acting on it. For a short distance, the vertical and horizontal components of a projectile are perpendicular and independent of each other.

Detailed explanation-4: -The vertical components of the projectile motion are handled by the force of gravity. In simple words, when an object is thrown upward there must be an unbalanced force that acts on the object and it will accelerate downward. This acceleration experiences the force of gravity and must be equal to 9.8m/sec2.

Detailed explanation-5: -The horizontal velocity component (vx) describes the influence of the velocity in displacing the projectile horizontally. The vertical velocity component (vy) describes the influence of the velocity in displacing the projectile vertically.