Ax = 2.00 km x (km) IXo = 4.70 km Xf = 6.70 km (a) Ax' = -1.50 km x (km) Ixí = 3.75 km Ixó = 5.25 km (b) Figure 2.18 One-dimensional motion of a subway train considered in Example 2.2, Example 2.3, Example 2.4, Example 2.5, Example 2.6, and Example 2.7. Here we have chosen the X-axis so that + means to the right and - means to the left for displacements, velocities, and accelerations.
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.
Suppose the train accelerates from rest to 30.0 km/h in the first 20.0 s of its motion. What is its average
acceleration during that time interval?
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