Let components of velocity v i along the horizontal and vertical directions be v i cos θ and v i sin θ respectively. Suppose that a projectile is fired in a direction angle θ with the horizontal by velocity v i. In such cases, the motion of a projectile can be studied quickly by resolving it into horizontal and vertical components that are independent of each other. A football kicked off by a player a ball thrown by a cricketer and a missile fired from a launching pad, all projected at some angles with the horizontal, are called projectiles. Lt is not essential that an object must be thrown with some initial velocity in the horizontal direction.
Because initial vertical velocity is zero, for this reason, vertical distance y, is provided as This vertical motion is the same when it comes to a freely falling body. It will accelerate downward under the force of gravity and hence a = g. The vertical motion of the ball is also not complicated. The ball moves with a consistent horizontal velocity component. The horizontal movement of the ball is simple. So, its horizontal speed will remain unchanged and will be v x, up until the ball hits something. There is no horizontal force acting on it. Overlooking the air friction, just force acting on the ball throughout the flight is the force of gravity.
According to Newton’s first law of motion, there will be no velocity in the horizontal direction, unless a horizontally directed force acts on the ball. Suppose that the ball leaves the hand of the thrower at point A. It is observed that the ball travels forward along with falls downwards until it strikes something. Let us think about the motion of a ball when it is thrown horizontally from a certain height.
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