Question

An object is thrown up from a height of 160 feet. Its velocity at t is v(t)=-32t+24 ft/ sec a) how high will it go? b) with what velocity will it hit the ground?

Answer 1

max height is at the vertex. use \(t=-\frac{b}{2a}\) to find it

Answer 2

oh but first you need the equation. it is
\[h(t)=-16t^2+v_0t+h_0\] in your case \(h_0=160\) and \(v_0=\) hmm confused. what is the initial velocity?

Answer 3

oh it is 24, so your equation is
\[h(t)=-16t^2+24t+160\] max when \(t=\frac{24}{32}=\frac{3}{4}\)
replace \(t\) by \(\frac{3}{4}\) to find the max height

Answer 4

thank you