Question 287568
Foul ball. Suppose Charlie O’Brian of the Braves hits a baseball straight upward at 150 ft/sec from a height of 5 ft.
Use the formula to determine how long it takes the ball to return to the earth.
:
The formula: h = -16t^2 + 150t + 5
h = 0 when it hits the ground, so we have
-16t^2 + 150t + 5  = 0
Solve this using the quadratic formula; a=-16; b=150; c=5
:
You should get a positive solution: t = 9.4 seconds
:
looks like this
{{{ graph( 300, 200, -6, 12, -200, 500, -16x^2+150x+5) }}}