19) A projectile is fired from ground level at an angle of 40.0 above horizontal at a speed of 30.0 m/s. What is the speed of the projectile when it has reached a height equal to 50.0% of its maximum height? A) 26.0 m/s B) 27.4 m/s C) 28.7 m/s D) 26.7 m/s E) 28.1 m/s