Calculate the velocity of the jet car at a time of 25 s by finding the slope

Question:

Calculate the velocity of the jet car at a time of 25 s by finding the slope of the vs. graph in the graph below.3000  2500 Position, x (m) Slope = v 2000 1500 1000 500 0 0 5 10 15 20 25 30 Time, t (s) P Atp AXp Ato t (s)

Strategy
The slope of a curve at a point is equal to the slope of a straight line tangent to the curve at that point. This principle is illustrated in Figure 2.48, where Q is the point at t=25s.

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