sled moves along a straight x (m) 20 ck. The position vs. time (x-t) graph the rocket sled is shown to the right. 15 10 + (a) When is the rocket sled at 5 rest? t (s) 1 3 5 -5 -10 -15- -20 (b) When is the rocket sled accelerating? (c) What is the velocity (in meters per second) of the rocket sled at t = 1.5 s? (d) What is the velocity (in meters per second) of the rocket sled at t= 5.5 s? (e) What is the position (in meters) of the rocket at t= 5.5 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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