20. A rocket is launched from the ground. Its acceleration is registered during the first eighty seconds and is given in the table below. Using Simpson's 1/3 rule, find the velocity of the rocket at t = 80 seconds. t (sec): f (cm/sec2): 30 %3D 0 10 31.63 | 33.34 35.47 | 37.75 40.33| 43.25 46.69 | 50.67 20 30 40 50 60 70 80
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