Homework Help: Math( help please ! )

Posted by Erin on Monday, October 17, 2011 at 4:52pm.

The height of a ball thrown vertically upward from a rooftop is modelled by h(t)=-5t^2=20t=50, where h(t) is the ball's height above the gorund,in meters, at time t seconds after the throw

a) determine the maximum height of the ball

b) how long does it take for the ball to reach its maximum height

c) how highis the rooftop

Math( help please ! ) - Mike, Monday, October 17, 2011 at 4:56pm
Read the problem carefully and if you still dont understand let me know :D
Math( help please ! ) - Reiny, Monday, October 17, 2011 at 6:11pm
Your equation makes no sense, make sure you read what you typed before posting.

Answer this Question

Related Questions

Math( help please ! ) - The height of a ball thrown vertically upward from a ...
math,help.algebra - I am stuck form this point i need help. the problem states: ...
math,correction - can someone correct this for me thanks A ball is thrown upward...
physics - A ball is thrown straight upward and returns to the thrower's hand...
Physics - A ball is thrown straight upward and returns to the thrower's hand...
science - a ball is thrown straight upward and returns to the thrower's hand...
physics - A ball is thrown vertically upward with an initial speed of 20 m/s. ...
Physics - A ball is thrown straight upward and returns to the thrower’s ...
math - A person standing on the roof of a building throws a ball directly upward...
physics - two students are on a balcony 20.6 m above the street. One student ...

For Further Reading

First Name:
School Subject:
Answer: