SOLUTION: How fast would a ball have to be thrown upward to reach a maximum height of 121 ft? [Hint: Use the discriminant of the equation 16t2 − v0t + h = 0.]
Algebra ->
Quadratic Equations and Parabolas
-> SOLUTION: How fast would a ball have to be thrown upward to reach a maximum height of 121 ft? [Hint: Use the discriminant of the equation 16t2 − v0t + h = 0.]
Log On
Question 756178: How fast would a ball have to be thrown upward to reach a maximum height of 121 ft? [Hint: Use the discriminant of the equation 16t2 − v0t + h = 0.] Answer by Alan3354(69443) (Show Source):
You can put this solution on YOUR website! How fast would a ball have to be thrown upward to reach a maximum height of 121 ft?
---------
It's the speed the ball would reach if dropped from 121 feet
find the time:
121 = 16t^2
t = 11/4 seconds
-----------
v = at
v = 32*(11/4)
v = 88 ft/sec
