A group of students is tasked with designing an experiment to find the final speed of a car that accelerates across the table from the starting point to the finish line. One student proposes the following idea: "All we need to do is measure the distance the car travels from the starting point to the finish line with a meter stick and the total time it takes using a stopwatch. Then d we can use the equation V = t to calculate the final speed as it crosses the finish line." What, if anything, is wrong with this student's idea? This will only calculate the average speed of the vehicle, not the final speed. This method will not work since the acceleration of the car is unknown. Based on the measurements taken, they should actually use the formula vf = at + vi Nothing is wrong, this idea will correctly determine the final speed of the car as it crossed the finish line.
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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