Soccer players often fool around in practice with something called the "crossbar challenge" which is an attempt to kick the ball from the ground and have it hit the crossbar of the goal, which is 8.0 ft or 2.4 m above the ground. Use your physics skills to calculate an initial velocity (speed and angle) that could be used to hit the crossbar from a point where the ball is on the ground 11 m away from the goal. Neglect air friction for your calculations. (We'll assume that the air friction doesn't cause the ball to be deflected by more than half the diameter of the ball, so it still hits the bar.
Displacement, Velocity and Acceleration
In classical mechanics, kinematics deals with the motion of a particle. It deals only with the position, velocity, acceleration, and displacement of a particle. It has no concern about the source of motion.
Linear Displacement
The term "displacement" refers to when something shifts away from its original "location," and "linear" refers to a straight line. As a result, “Linear Displacement” can be described as the movement of an object in a straight line along a single axis, for example, from side to side or up and down. Non-contact sensors such as LVDTs and other linear location sensors can calculate linear displacement. Non-contact sensors such as LVDTs and other linear location sensors can calculate linear displacement. Linear displacement is usually measured in millimeters or inches and may be positive or negative.
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