MEDAL AND FAN !!
A rock is launched from a cannon. After 1 second, the rock is 129 feet in the air; after 2 seconds, it is 236 feet in the air. Using the quadratic function, find the height, in feet, of the rock after 5 seconds in the air

Question

MEDAL AND FAN !!
 A rock is launched from a cannon. After 1 second, the rock is 129 feet in the air; after 2 seconds, it is 236 feet in the air. Using the quadratic function, find the height, in feet, of the rock after 5 seconds in the air

joftheworld · Answer

@precal

precal · Answer

ok so you are given 2 data points

precal · Answer

(1,129)  (2, 236)

joftheworld · Answer

okay..

precal · Answer

yes, we need a third value

joftheworld · Answer

yeah but how ..

precal · Answer

well I am thinking.......

anonymous · Answer

We gotta find the slope of this upside down parabola :/ I am thinking also

precal · Answer

|dw:1407890573346:dw|

anonymous · Answer

xD

precal · Answer

I was thinking about using the axis of symmetry but I don't see that working for me

precal · Answer

were you given any other piece of information?

joftheworld · Answer

h(x), can be represented by a quadratic function in terms of time, x, in seconds

precal · Answer

yes, I know that.  I wish I knew physics then we could set it up that way.....

joftheworld · Answer

i look some of this up on google and some people had something going on there.. but i didnt get that enough to plug in the variables..

precal · Answer

sorry, hope someone else can help you