Afire hose held near the ground shoots water at a speed of 6.5 m/s. at what angle(s) should the nozzle point in order that the water land 2.5 m away (fig. 3–36)? why are there two different angles? sketch the two trajectories.

Aballoon is rising vertically upwards at a velocity of 10m/s. when it is at a height of 45m from the ground, a parachute bails out from it. after 3s he opens his parachute and decelerates ata a constant rate 5m/s.when. (a) what was the height of the parachutist above the ground when he opened his parachute? (b)how far is the parachutist from the balloon at t=3s? (c)with what velocity does the parachutist hit the ground? (d)after how long does the parachutist hit the ground after his exist from the balloon?