anonymous
  • anonymous
A rock falls from a tower that is 400 ft high. As it is falling its height is given by the function h(t)=400-16t^2. Ho many seconds will it take for the rock to hit the ground (h=0)?
Mathematics
  • Stacey Warren - Expert brainly.com
Hey! We 've verified this expert answer for you, click below to unlock the details :)
SOLVED
At vero eos et accusamus et iusto odio dignissimos ducimus qui blanditiis praesentium voluptatum deleniti atque corrupti quos dolores et quas molestias excepturi sint occaecati cupiditate non provident, similique sunt in culpa qui officia deserunt mollitia animi, id est laborum et dolorum fuga. Et harum quidem rerum facilis est et expedita distinctio. Nam libero tempore, cum soluta nobis est eligendi optio cumque nihil impedit quo minus id quod maxime placeat facere possimus, omnis voluptas assumenda est, omnis dolor repellendus. Itaque earum rerum hic tenetur a sapiente delectus, ut aut reiciendis voluptatibus maiores alias consequatur aut perferendis doloribus asperiores repellat.
schrodinger
  • schrodinger
I got my questions answered at brainly.com in under 10 minutes. Go to brainly.com now for free help!
anonymous
  • anonymous
set \[h(t)=400-16t^2=0\] solve for t
anonymous
  • anonymous
since h =0 when it touches the ground 400-16t^2=0 16t^2=400 t^2=400/16 t^2= 25 t=5 seconds
anonymous
  • anonymous
\[0=400-16t^2\] \[16t^2=400\] \[t^2=25\] \[t=5\]

Looking for something else?

Not the answer you are looking for? Search for more explanations.

More answers

anonymous
  • anonymous
oh. i see thank you

Looking for something else?

Not the answer you are looking for? Search for more explanations.