If an arrow is shot upward on Mars with a speed of 64 m/s, its height in meters t seconds later is given by y = 64 t 1.86 t 2 . (Round your answers...

64tytt2

(Round your answers to two decimal places.)

(a) Find the average speed over the given time intervals.

(i)    [1, 2]

m/s

(ii)    [1, 1.5]

m/s

(iii)    [1, 1.1]

m/s

(iv)    [1, 1.01]

m/s

(v)    [1, 1.001]

m/s

(b) Estimate the speed when t = 1.

m/s