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The height (in meters) of a shot cannonball follows a trajectory given by h(t) = -4.9t^2 + 14t - 0.4 at time t (in seconds). As an improper fraction, for how long is the cannonball above a height of $7$ meters?

 Oct 18, 2021
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h(t) = -4.9t^2 + 14t - 0.4

7 = -4.9t^2 + 14t - 0.4

0 = - 04.9t^2 + 14t - 7.4     Use Quadratic formula to solve for two values of 't'......time between is the answer

 Oct 18, 2021

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