Chapter 2: Motion along a Straight Line
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7 Terms
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motion diagram
A(n) ________ shows the particles position at various instants as well as arrows to represent the particles velocity at each instant.
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Free fall
________ is a case of motion with constant acceleration.
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instantaneous velocity
The ________ is the limit of the average velocity as the time interval approaches zero.
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When is the x- velocity positive relative to the tangent of the slope
If the tangent to the x-t curve slopes upward to the right, then its slope is positive, the x-velocity is positive, and the motion is in the positive x-direction.
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When is the x- velocity negative relative to the tangent of the slope
If the tangent slopes downward to the right, the slope of the x-t graph and the x-velocity are negative, and the motion is in the negative x-direction.
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average acceleration
The change in the x-component of velocity Δv(x), divided by the time interval Δt is known as average acceleration.
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instantaneous acceleration
The instantaneous acceleration is the limit of the average acceleration as the time interval approaches zero.