A motorist traveling with a constant speed of 15 m/s passes a school crossing board, where the speed limit is 10 m/s. Just as the motorist passes the school board, a police officer stopped there starts to move with acceleration 3.0 m/s2. a) How much time elapses before the officer catch the motorist? b) What is the officer speed at that time? c) At that time, what distance has each vehicle traveled? Police officer: initially at rest, constant r-acceleration Motorist: constant .x-velocity SCHOOL CROSSING "Px = 3.0 m/s? UMOr = 15 m/s Xp XM 9/4/2017 PHYS-1110 CTP
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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