1.3 Two cars are traveling along a straight line in the same direction, the lead car at 25.0 m/s and the other car at 30 m/s. At the moment the cars are 40 m apart, the lead driver applies the brakes, causing her car to have an acceleration of -2.00 m/s². (a) How long does it take for the lead car to stop? b) What is the distance it travels during this time? c) Assuming that the chasing car brakes at the same time as the lead car, what must be the chasing car's minimum negative acceleration so as not to hit the lead car? (d) How long does it take for the chasing car to stop?
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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