59. (a) By taking the slope of the curve in Figure 2.60, verify that the velocity of the jet car is 115 m/s at t = 20 s. (b) By taking the slope of the curve at any point in Figure 2.61, verify that the jet car's acceleration is 5.0 m/s^2.
Position vs Time
3500 3000 2500 2000 1500 1000 500
10 15 20 25 30 35 Time (s)
Figure 2.60