The equation y = -6t^2 + 51t describes the height (in feet) of a projectile launched from the surface of Mars at 51 feet per second. In how many seconds will the projectile first reach 100 feet in height?
+240 This means y = 100
−6t2+51=100
−6t2+51=100=0
Apply quadratic formula to get the positive solution of 174+√20112
+240 This means y = 100
−6t2+51=100
−6t2+51=100=0
Apply quadratic formula to get the positive solution of 174+√20112
