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.
Does a real automobile have constant acceleration? Measured data for a
Porsche 944 Turbo at maximum acceleration are as shown in the table.
a. Convert the velocities to m/s, then make a graph of velocity versus time.
Based on your graph, is the acceleration constant? Explain.
b. Estimate how far the car traveled in the first 10 s.
c. Draw a smooth curve through the points on your graph, then use your graph to estimate the car’s acceleration at 2.0 s and 8.0 s. Give your answer in SI units. Hint: Remember that acceleration is the slope of the velocity graph.
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