An object falls from rest from the top of a cliff. Another object is thrown downward from the same height 1.80s later with an initial speed of 35.0 m/s. (a) If both objects hit the ground simultaneously, how high is the cliff? (Ans.: 36 m) (b) If, while the objects are airborne, an earthquake opens a hole 20 m deep in the ground, with what speed will the second object hit the bottom? (Ans.: 48.2 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.
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