Algebra Word Problem Help?
If a rock is dropped from a building 576 ft high, then its istance in feet from the ground t seconds later is a function defined by f (t) =-16t^2 +576 how long after it is dropped will it hit the ground?
If a rock is dropped from a building 576 ft high, then its istance in feet from the ground t seconds later is a function defined by f (t) =-16t^2 +576 how long after it is dropped will it hit the ground?
Comments
Solve for t:
-16t² + 576 = 0
16t² = 576
t² = 36
t = 6