Physics

The position time-graph for the motion of a certain particle is a smooth curve, like a parabola.At a given instant of time the tangent line to t he position-time graph has a negative slope. is the instantaneous velocity of the particle at this time positive, negative, or zero?Explain

positive

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  1. 1) can the position-time graph for the motion of an object be a horizontal line?explain
    -yes

    2) can the positon-time graph bea vertical line, explain
    -no

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  2. velocity = change in position/change in time = slope of position time graph.
    If the slope is negative, the velocity is negative

    why not? constant y, going right or left

    why not? constant x, going up or down

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    2. 👎
  3. 1) can the position-time graph for the motion of an object be a horizontal line?explain
    - so its yes?

    2) can the positon-time graph bea vertical line, explain
    -so its yes

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    2. 👎

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