A particle that moves along the x-axis has its position given by x=54t – 2t^3 m. At the instant t = 3.0 s, the particle speed is zero. Which of the following statements is correct? a)The particle remains at rest after t = 3.0 s b)The particle does not accelerate any more after t s 3.0 s c)The particle can be in positions x < 0 m only when t < 0 s d)All of the above are correct e)None of the above is correct
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.
A particle that moves along the x-axis has its position given by x=54t – 2t^3 m. At the instant t = 3.0 s, the particle speed is zero. Which of the following statements is correct?
a)The particle remains at rest after t = 3.0 s
b)The particle does not accelerate any more after t s 3.0 s
c)The particle can be in positions x < 0 m only when t < 0 s
d)All of the above are correct
e)None of the above is correct
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