Question

3 multiple choice 0.5 points
video (timestamp -10:09): on an x-t graph, the curve reaches a highest point (peak) around t = 4 s, so the tangent is horizontal. what is the instantaneous velocity at the peak?
cannot be determined from an x-t graph
positive and maximum
negative and maximum magnitude
0 m/s

Explanation:

On a position-time (x-t) graph, instantaneous velocity is the slope of the tangent line at a given point. A horizontal tangent has a slope of 0, so the instantaneous velocity at this peak is 0 m/s.

Answer:

0 m/s