Problema Solution
a rocket lauched from top of 110 ft cliff. The velocity of it is 160 ft per second. The height given by the equation is h=16t^2+160t+110. How long will it take to reach 40 ft from the ground?
Answer provided by our tutors
h=16t2+160t+110.
So, to reach 40 ft from the ground => 16t2+160t+110 = 40;
Or, 16t2+160t+70=0.
This equation will not give you a correct answer for t. It will give only negative values which is not a valid answer.