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If an arrow is shot upward on Mars with a speed of 56 m/s, its height in meters t seconds later is

given by y = 56t − 1.86t2

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

(i)    [1, 2]


(ii)    [1, 1.5]


(iii)    [1, 1.1]


(iv)    [1, 1.01]


(v)    [1, 1.001]


(b) Estimate the speed when t = 1.


use table to answer

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