
William W. answered 10/02/20
Experienced Tutor and Retired Engineer
To find the height at various times, just plug in the associated values of t into the function. For example at t = 6, the height is h(6) = 58(6) - 0.83(6)2 = 348 - 29.88 = 318.12 m
Here is a table of values of "t" vs heights (or h(t)):
Time Height
(t) (h(t))
6 318.12
6.001 318.1680392
6.01 318.600317
6.1 322.9157
6.5 341.9325
7 365.33
The average velocity is given by (h2 - h1)/(t2 - t1). For the interval [6, 7] the points are as follows:
(t1, h1) = (6, 318.12)
(t2, h2) = (7, 365.33)
So the average velocity is (365.33 - 318.12)/(7 - 6) = 47.12/1 = 47.1200 m/s
For the interval [6, 6.5] the points are:
(t1, h1) = (6, 318.12)
(t2, h2) = (6.5, 341.9325)
So the average velocity is: (341.9325 - 318.12)/(6.5 - 6) = 23.8125/0.5 = 47.6250 m/s
Just keep repeating the process for the other time intervals.