You throw a ball straight up from a roof of a building. The ball leaves your hand at a point even with the roof railing with an upward speed of 15m/s. The ball is then in free fall. On its way back down, it just misses the railing. After 6.0s from release, the ball then hits the ground. What is the velocity of the ball upon impact on the ground? A. 21.9m/s B. -21.9m/s C. 43.8m/s D. -43.8m/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.
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