Question

If a ball is thrown into the air with a velocity of 40 m/s, its height in meters after t seconds
is given by y = 40t - 16t². Find the average velocity for the time period beginning when
t = 2 and lasting after
(i) 0.5 seconds (ii) 0.1 seconds
(iii) 0.05 seconds (iv) 0.01 seconds
Also estimate the instantaneous velocity when t = 2.
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Answer 1

Explanation:

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