Carlos is pitching in the nal game of the season. The pitcher's mound is 18.4 meters from home plate, and 0.2 meters above the level of the eld. Carlos throws an amazing fastball with an initial speed of 43.0 m/s. At the moment the ball leaves his hand, it is 2.30 meters above the mound.
1) What should the angle between the initial velocity of the ball and the horizontal be so that the ball crosses the plate 0.70 meters above the ground?
2) With what speed does the ball cross the plate?