document.write( "Question 1202971: A toy rocket is propelled upward at a speed of 96ft/sec by a machine that is 11 feet off the ground. The height h of the object after t seconds can be found using the function: h (t) = -16t^2 +96t + 11
\n" ); document.write( "When will the toy rocket hit the ground and what is the practical domain for this function? \n" ); document.write( "

Algebra.Com's Answer #838186 by 4419875(21) $\"\"$ $\"About$

You can put this solution on YOUR website!
Since we know that it is a function of h(t), and expected that h(t) = 0 which means it has hit the ground; it can be said that we can obtain time (t), in such way $\"16t%5E2-96t-11=0\"$ \r
\n" ); document.write( "\n" ); document.write( "By quadratic formula, $\"t+=+-0.11s\"$ and $\"t+=+6.11s\"$ \r
\n" ); document.write( "\n" ); document.write( "Practically there's no such time existing at negatives so 6.11s should be the time to get into.\r
\n" ); document.write( "\n" ); document.write( "Now the domain can be dom h(t):(0, 6.11]. \n" ); document.write( "

\n" );