Question

20205U College Algebra (MATH-1314-56400) Homework: Practice Exam 2 Kelejordan & 07/31/2012 Score: 0 of 1 pt S 32 of 34 (13 complete HW Score: 28 583, 9.75 of 3 3.3.41 A ball is thrown directly upward from a height of it with an initial velocity of 20 sec. The function ) - 10.2016 gives the height of the ball in seconds er has been thrown Determine the time at which the ball reaches its maximum height and find the maximum height. The ball reaches to maximum height of soc(s) after the ball is thrown. (Type integers or decimals)

Answer 1

S(t) = -16t +206 + 6 10 s'(t) = -32t +20 = 0 1 1 - 1 (olotof t 20 5 8 32 S"(t) = -32 5" (5/8) = -32 <o 0 Maximum height reached at t= 5/8 = 0.625 D 2 Maximum height Smax = - 16 (5/8) + 20 (5/8) +6 and bat A = 12.25 feet e+ox at t= 0.625 sec 2xt do