SOLUTION: b. Suppose a scientist on Earth throws a baseball upward. The scientist lets go of the ball 2 meters above the ground with an initial velocity of 10 meters per second. How long doe

Question 473894: b. Suppose a scientist on Earth throws a baseball upward. The scientist lets go of the ball 2 meters above the ground with an initial velocity of 10 meters per second. How long does it take for the ball to hit the ground (H=0)? (Use the quadratic formula to solve this problem, show all work). Write a statement to interpret your results.
Answer by ankor@dixie-net.com(22740) (Show Source): You can put this solution on YOUR website!
Suppose a scientist on Earth throws a baseball upward.
The scientist lets go of the ball 2 meters above the ground with an initial velocity of 10 meters per second.
How long does it take for the ball to hit the ground (H=0)?
(Use the quadratic formula to solve this problem, show all work).
Write a statement to interpret your results.
:
h = -4.9x^2 + 10x + 2
where
h = height above ground
-4.9x^2 = the downward force of gravity
10x = upward velocity of the ball
2 = dist above ground when ball is thrown
:
-4.9x^2 + 10x + 2 = 0
the quadratic formula

a=-4.9, b=10, c=2

you can do the math here, you should get a positive solution of:
x = 2.224 seconds
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