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Mathematics 21 Online
OpenStudy (waheguru):

This is an extending queston but i awnt to know how to solve it, can someone please help me?

OpenStudy (waheguru):

OpenStudy (mertsj):

You could find the zeros of the function and then average them.

OpenStudy (mertsj):

The zeros would be when the rock is on the ground. Half of that would be when it is at its high point.

OpenStudy (waheguru):

How can we find the zeros?

OpenStudy (waheguru):

the equation given is in standard form

OpenStudy (mertsj):

set the function equal to 0 and solve the quadratic equation.

OpenStudy (mertsj):

\[-4.9t^2+v _{o}t+h _{o}=0\]

OpenStudy (waheguru):

yea I understand so far...

OpenStudy (mertsj):

Solve for t

OpenStudy (waheguru):

What do we do about the Ho

OpenStudy (mertsj):

It's c

OpenStudy (waheguru):

Do we move it over to the left side?

OpenStudy (mertsj):

Depends on what method you are using. If you want to complete the square, then yes. If you want to use the quadratic formula, then no.

OpenStudy (waheguru):

Can you show by completing the square

OpenStudy (waheguru):

so we move it over and then what?

OpenStudy (mertsj):

|dw:1381112696012:dw|

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