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.
Velocity from position The graph of s = ƒ(t) represents the position of an object moving along a line at time t Ú 0.
a. Assume the velocity of the object is 0 when t = 0. For what
other values of t is the velocity of the object zero?
b. When is the object moving in the positive direction and when
is it moving in the negative direction?
c. Sketch a graph of the velocity function.
d. On what intervals is the speed increasing?
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