Thus, the average speed between times 1 and 1 + h is as follows. Vava = y ( 1 + h) - y(1) (1 + h) - 1 7 ( 1 + h ) - 1.86 ( 1 + 1 ) 2 - 5.14 h 3.28h - 1.86 12 = (1.86) h = 3.28 3.28 (1.86) 1.86 jh , h to Step 2 To calculate the average speed for the time period [1, 2], we substitute h = 1 into Vaya = 3.28 - 1.86h, and evaluate. Vavg = 3.28 - 1.86(1) = 3.28 - 1.86 m/s (rounded to two decimal places) Similarly, for the time period [1, 1.5], we have the following. avg = 3.28 - 1.86(0.5) 3.28 - (do not round) m/s (rounded to two decimal places)