SOLUTION: The equation y = -x^2 + 10 models the flight of a projectile where y is the height of the projectile in meters x seconds after launch. Determine the height after:
A) 1 second
B
Question 1143817: The equation y = -x^2 + 10 models the flight of a projectile where y is the height of the projectile in meters x seconds after launch. Determine the height after:
A) 1 second
B) 3 seconds
C) 10 seconds
I know that this is probably an extremely easy problem, but I don't know where to start. I figured that you were supposed to replace a, b, and c with the x in the problem, but there are two, and I thought that would mess it up. This is for my summer packet, so there's no real rush, I just can't seem to find any online examples of this type of question. Thank you in advance! Found 2 solutions by Alan3354, ikleyn:Answer by Alan3354(69443) (Show Source):
You can put this solution on YOUR website! The equation y = -x^2 + 10 models the flight of a projectile where y is the height of the projectile in meters x seconds after launch. Determine the height after:
A) 1 second
x = 1
h = -1 + 10 = 9 meters
--------------------
B) 3 seconds
x = 3
h = -9 + 10 = 1 meter
---------------------
C) 10 seconds
---> -90 meters. The projectile impacts before 10 seconds.
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y = -x^2 + 10 is not the usual equation for projectiles, tho it could be valid on some planet or asteroid.
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