SOLUTION: The distance that an object will fall in t seconds varies directly with the square of t. An object falls 7 feet in 1 second. How long will it take to fall 112 feet? A) t = 5 sec

Algebra ->  Graphs -> SOLUTION: The distance that an object will fall in t seconds varies directly with the square of t. An object falls 7 feet in 1 second. How long will it take to fall 112 feet? A) t = 5 sec       Log On


   



Question 313120: The distance that an object will fall in t seconds varies directly with the square of t. An object falls 7 feet in 1 second. How long will it take to fall 112 feet?
A) t = 5 sec
B) t = 4 sec
C) t = 16 sec

Thanks,
SJackins

Answer by ankor@dixie-net.com(22740) About Me  (Show Source):
You can put this solution on YOUR website!
The distance that an object will fall in t seconds varies directly with the square of t.
An object falls 7 feet in 1 second.
:
The equation; (d = distance)
7t^2 = d
How long to fall 112 ft?
7t^2 = 112
t^2 = 112%2F7
t^2 = 16
t = sqrt%2816%29
t = 4 seconds