Answer true or false. An object thrown upward reaches a height of s(t) = -9.8t² + 49t. The object is highest at t = 5, where t is in seconds?

Question

Quizplus · Accepted Answer

To find the maximum height, we need to find the vertex of the quadratic function s(t) = -9.8t^2 + 49t. The t-coordinate of the vertex is given by -b/2a, where a = -9.8 and b = 49. Thus, t = -49/2(-9.8) = 5 seconds. Therefore, the object is highest at t = 5 seconds. So, the statement is true.

Answer True or False