SOLUTION: A rocks falls from a tower that is 320 ft high. As it is falling, it height is given by the formula h=320--16t^2. How many seconds (in tenths) will it take for the rock to hit th
Algebra.Com
Question 976217: A rocks falls from a tower that is 320 ft high. As it is falling, it height is given by the formula h=320--16t^2. How many seconds (in tenths) will it take for the rock to hit the ground? h=0
Answer by jim_thompson5910(35256) (Show Source): You can put this solution on YOUR website!
Plug in
Add to both sides.
Divide both sides by 16.
Apply the square root to both sides
Use a calculator here
Round to the nearest tenth
-------------------------------------------------------
It will take approximately 4.5 seconds for the object to fall 320 ft. This is ignoring air resistance.
------------------------------------------------------------------------------------------------------------------------
If you need more one-on-one help, email me at jim_thompson5910@hotmail.com. You can ask me a few more questions for free, but afterwards, I would charge you ($2 a problem to have steps shown or $1 a problem for answer only).
Alternatively, please consider visiting my website: http://www.freewebs.com/jimthompson5910/home.html and making a donation. Any amount is greatly appreciated as it helps me a lot. This donation is to support free tutoring. Thank you.
Jim
------------------------------------------------------------------------------------------------------------------------
RELATED QUESTIONS
a rock falls from a tower that is 176ft high. as it is falling , its height is given by... (answered by jim_thompson5910)
a rock falls from a tower that is 176ft high. As it is falling its height is given by the (answered by jim_thompson5910,rajagopalan)
a rock falls from a tower that is 320 feet high. As it is falling, its height is given... (answered by Alan3354)
A rock falls from a tower that is 400 ft high. AS it is falling, its height is given by... (answered by mananth)
A rock falls from a tower that is 304 feet high. As it is falling, its height is given... (answered by stanbon,mananth,Alan3354)
A rock falls from a tower that is 132.3 m high. As it is falling, its height is given by... (answered by Alan3354)
Round to the nearest tenth, if necessary. A rock falls from a tower that is 432 feet... (answered by vleith)
Solve the problem. Round to the nearest tenth, if necessary.
A rock falls from a tower... (answered by ankor@dixie-net.com)
Round to the nearest tenth, if necessary. A rock falls from a tower that is 432 feet... (answered by stanbon)