SOLUTION: A ball is thrown from an initial height of 70 meters with an initial upward velocity of 10 m/s. The balls height (in meters) after “t” seconds is given by the following. H=70-

Question 1191450: A ball is thrown from an initial height of 70 meters with an initial upward velocity of 10 m/s. The balls height (in meters) after “t” seconds is given by the following.
H=70-10t-5t squared
How long after the ball is thrown does it have a height of 13 feet?
How long after the ball is thrown does it hit the ground?
Round your Answer to the nearest hundredth.
Answer by ikleyn(52803) (Show Source): You can put this solution on YOUR website!
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A ball is thrown from an initial height of 70 meters with an initial upward velocity of 10 m/s.
The balls height (in meters) after “t” seconds is given by the following.
H=70-10t-5t squared
(a) How long after the ball is thrown does it have a height of 13 feet?
(b) How long after the ball is thrown does it hit the ground?
Round your Answer to the nearest hundredth.
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It is a VERY BAD STYLE to mix in one problem two different units for the height without any visible cause,

as you do it, mixing meters and feet, in this problem.

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