SOLUTION: A ball is thrown from 4 feet off the ground with a vertical velocity of 30 feet per second, Knowing this, Could you provide an equation to show this? Thanks.

Algebra ->  Quadratic Equations and Parabolas -> SOLUTION: A ball is thrown from 4 feet off the ground with a vertical velocity of 30 feet per second, Knowing this, Could you provide an equation to show this? Thanks.      Log On


   

Question 888571: A ball is thrown from 4 feet off the ground with a vertical velocity of 30 feet per second, Knowing this, Could you provide an equation to show this? Thanks.
Answer by josmiceli(19441) About Me  (Show Source):
You can put this solution on YOUR website!
Let +t+ = elapsed time in seconds
+-16t%5E2+ ft / sec2 is the term that pulls the ball back to earth
+30t+ ft/sec is the term for the upward velocity
+4+ ft is the term for feet above ground
+h%28t%29+ ft is the time-dependent function
+h%28t%29+=+-16t%5E2+%2B+30t+%2B+4+
Here's the plot:
+graph%28+400%2C+400%2C+-1%2C+3%2C+-3%2C+20%2C+-16x%5E2+%2B+30x+%2B+4+%29+