(:2 EXAMPLE 2.18 Determining Instantaneous Velocity from the Slope at a Point: Jet Car Calculate the velocity of the jet car at a time ofzs s by nding the slope of the xvs. t graph in the graph below. ..._ 3000 w 2500 " 2000 1500 1000 500 [TI Position, 0 51015 202530 Time, 1' (3) Solution 1. Find the tangent line to the curve at t = 25 S. 2. Determine the endpoints of the tangent. 'lhese correspond to a position of 1300 m at time 19 s and a position of3120 m at time 32. s. 3. Plug these endpoints into the equation to solve for the slope, v