jwt:

If a ball is thrown straight up into the air with an initial velocity of [math] ft/s, its height in feet after [math] seconds is given by [math]. Find the average velocity for the time period begining when [math] and lasting (i) [math] seconds (ii) [math] seconds (iii) [math] seconds Finally based on the above results, guess what the instantaneous velocity of the ball is when [math].

Solution:

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