From another post you made
, you're in calculus. But this question on requires stuff you learned back in algebra.
cpoolrn wrote:A ball is thrown directly upward from the edge of a cliff in wuch a way that t seconds later, it is
feet above the ground at the base of the cliff. Sketch the graph of this equation (making the t-axis the horizontal axis) and then answer these questions:
a. How high is the cliff?
At what time is the ball right at the cliff top? Plug that time value in for "t" and find the height.
cpoolrn wrote:b. When (to the nearest tenth of a second) does the ball hit the ground at the base of the cliff?
When the ball hits the ground at the base, what is its height above the base? Plug this value in for "s" and solve for the time "t".
cpoolrn wrote:c. Estimate the time it takes for the ball to reach its maximum height. What is the maximum height?
I'm not sure what they mean by "estimate" here...? But the maximizing values will be at the vertex, so find the vertex (by completing the square or else using the formula) and provide the value of the height.