Suppose that a car traveling to the west (the -x direction) begins to slow down as it approaches a traffic light. Which statement concerning its acceleration in the x direction is correct? Both its acceleration and its velocity are positive. Both its acceleration and its velocity are negative. Its acceleration is positive but its velocity is negative. Its acceleration is negative but its velocity is positive.
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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Both its acceleration and its velocity are positive.
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Both its acceleration and its velocity are negative.
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Its acceleration is positive but its velocity is negative.
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Its acceleration is negative but its velocity is positive.
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