+100 The equation describes the height (in feet) of a projectile launched from the ground at 60 feet per second upward. In how many seconds will the projectile first reach 56 feet in height? Express your answer as a decimal rounded to the nearest hundredth.
+36916 The equation (which was left out of the question) should be
-16t^2 + 60t = h (t)
when will h(t) = 56 the firt time ( on the way upward for the projectile) ?
-16t^2 + 60 t = 56
-16t^2 + 60t -56 = 0 use quadratic formula to find t = 1.75 seconds and 2 seconds (on the way down)
