A ball is thrown upward with position h(t)=−16t2+48t+5h(t) = -16t^2 + 48t + 5h(t)=−16t2+48t+5 feet. What is its velocity at t=1t = 1t=1?
161616 ft/s
323232 ft/s
484848 ft/s
000 ft/s