A speeder traveling at 40 m/sec along a straight road sees a police car in the distance. He applies the brakes and the car decelerates at a constant rate of 5 m/sec2. a) How long does it take for the car to reach 25 m/sec? b) How far does the car travel during this time?
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.
A speeder traveling at 40 m/sec along a straight road sees a police car in the distance. He applies the brakes and the car decelerates at a constant rate of 5 m/sec2.
- a) How long does it take for the car to reach 25 m/sec?
- b) How far does the car travel during this time?
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