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Jon is hitting baseballs. When he tosses the ball into the air, his hand is 5 feet above the ground. He hits the ball when it falls back to a height of 4 feet. The height of the ball is given by h = - 16x^2 + 6t + 5 where in seconds How much time will pass before Jon hits the ball? What is the maximum height the ball attains?

 Jan 18, 2020
 #1
avatar+21681 
+3

h = 4 = -16t^2 + 6t + 5

0 = -16t^2+6t +1                  Use Quadratic formula to find t = .5 s  or   -.125 (throw out)

 

max = - b/2a =  -6/-32 = .1875 sec

        -16(.1875^2) + 6 (.1875) + 5  = 5.56 ft 

 Jan 18, 2020
 #2
avatar+11619 
+1

Jon is hitting baseballs. When he tosses the ball into the air, his hand is 5 feet above the ground. He hits the ball when it falls back to a height of 4 feet. The height of the ball is given by h = - 16x^2 + 6t + 5 where in seconds How much time will pass before Jon hits the ball? What is the maximum height the ball attains?

laugh

 Jan 18, 2020

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