A stone is launched straight upward from the ground, reaches a maximum height of 30.0 m, and then falls back down to the ground. What was the stone's launch speed (that is, its initial speed right after launch)? 589 m/s 24.3 m/s 30.0 m/s 3.06 m/s
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.
The third equation of motion is
where, v is the final velocity, u is the initial velocity, a is the acceleration and s is the distance.
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