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.
Scientists have studied two species of sand lizards, the Mojave fringe-toed lizard and the western zebra-tailed lizard, to understand the extent to which the different structure of the two species’ toes is related to their preferred habitats—fine sand for the Mojave lizard and coarse sand for the zebra-tailed lizard. Shown is a somewhat simplified velocity-versus-time graph for the Mojave fringe-toed lizard.
a. Estimate the maximum acceleration of the lizard in both m/s2 and g’s.
b. Estimate its acceleration at t = 150 ms.
c. Estimate how far it travels in the first 50 ms.
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