b) An arrow is shot into the air at an angle of 60 above the horizontal with a speed of 20 m's. Ignoring air resistance, calculate the magnitude and direction of the velocity of the arrow 3.0 s after it leaves the bowstring. 'n Pyl word teen 60 " bo die horisontale vlak deu'n boog met'n spoed van 20 m's in die lug opgeskiet. Igoreer lugweerstand en bepaal die grootte en rigting van die pyl se snelheid 3.0 s na dit die boog verlaat. (..../6)