SOLUTION: A Ball is thrown from an inicial height of 3 feed Witherspoon an inicial upward velocidad of 30 ft/s.The ball's heght h (in feet ) after t esconde is giren by the following.
h=3+3
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Question 1202327: A Ball is thrown from an inicial height of 3 feed Witherspoon an inicial upward velocidad of 30 ft/s.The ball's heght h (in feet ) after t esconde is giren by the following.
h=3+30t-16t^2
Find all values of t for which the ball's height is 11 feed.
Answer by math_tutor2020(3835) (Show Source): You can put this solution on YOUR website!
Your post has strange typos.
I'm assuming it's supposed to be this:
A ball is thrown from an initial height of 3 feet with an initial upward velocity of 30 ft/s. The ball's height h (in feet) after t seconds is given by the following.
h = 3 + 30t - 16t^2
Find all values of t for which the ball's height is 11 feet.
If my assumption is incorrect, then please let me know.
----------------
We want to find when the ball's height is 11 feet.
We want to find the value(s) of t which lead to h = 11.
Replace h with 11.
Then we turn to the quadratic formula.
Plugging in a = -16, b = 30, c = -8
or
or
Answers: Approximately t = 0.321946 and t = 1.553054
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