A quadratic problem.

[Rainbow]

Could someone help me out on this question;;

A model rocket is launched from a platform and its height h metres is given as a function of the elapsed time t seconds by
h = -4.9t(squared) + 180t + 2. Determine the following :

1) the maximum height of the rocket.

2) the time required for the rocket to reach its maximum height

3) the time required for the rocket to reach the ground

I understand that I have to use my scientific calculater, but am unsure on how to put down the equation for the graph to appear.

 

[Deleted member 4993]

Could someone help me out on this question;;

A model rocket is launched from a platform and its height h metres is given as a function of the elapsed time t seconds by
h = -4.9t(squared) + 180t + 2. Determine the following :

1) the maximum height of the rocket.

2) the time required for the rocket to reach its maximum height

3) the time required for the rocket to reach the ground

I understand that I have to use my scientific calculater, but am unsure on how to put down the equation for the graph to appear.

This is an equation of a parabola.

What is co-ordinate of the vertex of the parabola? questions 1 & 2

What are the x-intercepts (t-intercept in this case) of the parabola? Question 3


Please share your work with us .

If you are stuck at the beginning tell us and we'll start with the definitions e.g. cost, equity & debt.

You need to read the rules of this forum. Please read the post titled "Read before Posting" at the following URL:

http://www.freemathhelp.com/forum/th...217#post322217

 

[stapel]

I understand that I have to use my scientific calculater, but am unsure on how to put down the equation for the graph to appear.

1) You don't need the picture; use the algebra they've taught you.
2) A scientific calculator, by definition, doesn't do graphs.