A projectile is launched from the ground (thus, the initial position is (0, 0) ) with an initial speed of 150 m/s and angle to the horizontal of 60. (a) How long does it take for the projectile to hit the ground (b) Where does the projectile hits the ground and at what speed? (in other words, (a) find the time of flight, and (b) find the range and the speed, that is the magnitude of the velocity, at which the projectile hits the ground). a) time of flight = T= 2/ Vo|sind = 2 ( 150 m/c) sin 60 y 24, 51098 seconds 9.8 6) range = v . cose . T = (150 mls ) ( cos 60. ) ( 24. 51098s ) = 1988. 32 meters net speed = Iv sine vcosel = J ( vcine ) 2 + ( v coso) = = J V2 = V = 150 meters/sec