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The height of a projectile, h, in meters, compared to time, t, in seconds, from a...

The height of a projectile, h, in meters, compared to time, t, in seconds, from a launch is given by the equation h (t) = -4.9t^2 + 13t + 4.3

a) Calculate its average speed during the 2nd second
b) Calculate its instantaneous speed exactly 2 seconds after launching (without derivatives)

Math   Precalculus   
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