5. An astronaut on the moon holds a plastic ball and a metal ball. If the astronaut releases the two objects at the same time and same height, what do you think will the astronaut observe? * A. The metal ball falls faster than the plastic ball. B. The plastic ball falls faster than the metal ball. C. The plastic ball and metal ball fall at the same time. D. The metal ball and the plastic ball will remain suspended.
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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