The acceleration at ® is equal to the slope of the green tangent line at t = 2 s, which is – 20 m/s². Vz (m/s) 40 30 20 10 t (s) -10 - 20 -30 1 2 3 4 Figure 2.9 (Example 2.6) The velocity-time graph for a particle moving along the x axis according to the expression v = 40 – 5t2.
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.
The velocity of a particle moving along the x axis varies according to the expression νx = 40 - 5t2, where νx is in meters per second and t is in seconds.
(A) Find the average acceleration in the time interval t = 0 to t = 2.0 s. (B) Determine the acceleration at t = 2.0 s.
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