Asked by Victoria
If a certain cannon is fired from a height of
7.8 meters above the ground, at a certain angle, the height of the cannonball above the ground, h, in meters, at time, t, in seconds, is found by the function
h(t)=−4.9t2+24.5t+7.8.
What is the maximum height of the cannonball in meters, when is the cannonball at maximum height at in seconds, and when will the cannonball strike the ground at in seconds?
7.8 meters above the ground, at a certain angle, the height of the cannonball above the ground, h, in meters, at time, t, in seconds, is found by the function
h(t)=−4.9t2+24.5t+7.8.
What is the maximum height of the cannonball in meters, when is the cannonball at maximum height at in seconds, and when will the cannonball strike the ground at in seconds?
Answers
Answered by
Steve
You know how to find the vertex of a parabola. That will give the maximum height.
It hits the ground when h=0. Sol solve that for t.
It hits the ground when h=0. Sol solve that for t.
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