From the top of a tall building, you throw one ball straight up with speed and one ball straight down with speed. Which ball has the greater speed when it reaches the ground? Which ball gets to the ground first? Which ball has a greater displacement when it reaches the ground? Which ball has traveled the greater distance when it hits the ground? Justify your answers.
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.
From the top of a tall building, you throw one ball straight up with speed and one ball straight down with speed. Which ball has the greater speed when it reaches the ground? Which ball gets to the ground first? Which ball has a greater displacement when it reaches the ground? Which ball has traveled the greater distance when it hits the ground? Justify your answers.
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