Question: The graph shows the position x of a switch engine in a rail yard as a function of time t. At which of the labeled

The graph shows the position x of a switch engine in a rail yard as a function of time t. At which of the labeled times t0 to t7 is
(a) ax (b) ax = 0,
(c) ax > 0,
(d) vx = 0,
(e) The speed decreasing?

34 s

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