An athlete is training on a 100 m long linear track. His motion is described by the graph of his position vs. time, b x (m) 100 80 60 40 20 A direction VA magnitude VB direction VB magnitude vc direction VC magnitude VD direction VD ---Select--- ---Select--- 10 20 30 40 (a) For each segment of the graph, find the magnitude and direction of the athlete's velocity. magnitude VA m/s ---Select--- ---Select--- B ---Select--- m/s m/s с m/s D t (s) 50 60 (b) What are the magnitude and direction of the athlete's average velocity over the entire 60 s interval? magnitude m/s direction
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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