An archer fires an arrow by an initial velocity of 21 m/s at an angle of 50 from the horizontal. The arrow lands on a hill that is 5.0 m higher than its initial height. Ignore the effects of air resistance.
1. What speed does the arrow have when it lands?
2. How much time does the arrow spend in the air?
3. How far does the arrow go in the horizontal direction? If you couldn’t answer the first part, assume that the arrow spent 3.7 s in the air?