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anonymous
 5 years ago
A rock is launched from a cannon. After 1 second, the rock is 243 feet in the air; after 2 seconds, it is 452 feet in the air. Using the quadratic function, find the height, in feet, of the rock after 5 seconds in the air
anonymous
 5 years ago
A rock is launched from a cannon. After 1 second, the rock is 243 feet in the air; after 2 seconds, it is 452 feet in the air. Using the quadratic function, find the height, in feet, of the rock after 5 seconds in the air

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anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0I've seen a similar problem to it yesterday, and I got confused lol ^_^"

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0What is the angle at which it is launched?

amistre64
 5 years ago
Best ResponseYou've already chosen the best response.0a+b = 243 a = 243  b 4a +2b = 452 4(243b) +2b = 452 892 4b + 2b = 452 892 452 = 2b 440/2 = b b = 220  a = 243220 = 23 23x^2 +220x = y  23 + 220 = 243 checks 23(4) + 220(2) = 452 92 + 440 = 30 ok.....whatd I do wrog..hard to type in the dark :)

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0assume it is launched straight up. say its initial acceleration is a. distance is ut+1/2at^2

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0initial speed is 0. so d = 1/2 at^2

amistre64
 5 years ago
Best ResponseYou've already chosen the best response.0its a simple quad equation, not physics....but that might be a shot :)

amistre64
 5 years ago
Best ResponseYou've already chosen the best response.0(0,0) (1,243) (2,452)

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0since it is launched straight up in the air, the gravity is acting against the rock. so s = 1/2(a32.17)t^2

amistre64
 5 years ago
Best ResponseYou've already chosen the best response.01a + 1b = 243 b = 243a 4a + 2b = 452 4a + 2(243a) = 452 4a +486 2a = 452 2a = 452  486 2a = 34 a = 17 by that

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0oh okay, then you should follow amistre 64's procedure.

amistre64
 5 years ago
Best ResponseYou've already chosen the best response.0b = 243 17 b = 260 17x^2 +260x = y 17(4) + 260(2) = 452 68 + 520 = 452 right? someone tell me its right lol

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0452 is the height of the rock at 2 seconds.

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0amistre64 can u please help me

amistre64
 5 years ago
Best ResponseYou've already chosen the best response.0the numbers are working yay!!...plug in a 5

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0that's what i thought. i just tried it. i got 875

amistre64
 5 years ago
Best ResponseYou've already chosen the best response.0425 + 1300= 875....me too :)

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0correct! one more to go! let's hope i pass it this time! i've only missed one outta 4. on to the 5th question. thanks amistre64!

amistre64
 5 years ago
Best ResponseYou've already chosen the best response.0i wrote you a quad program today, but left my flash drive at the college lol
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