4. A bullet is shot horizontally from shoulder height (1.5 m) with an initial speed 200 m/s. a. How much time passes before the bullet hits the ground? b. How far does the bullet travel horizontally? 5. A projectile is launched at an angle of 30" and lands 20 seconds later at the same height as it was launched. a. What is the magnitude of the initial velocity of the projectile? b. What is the maximum height the projectile reaches? c. How far does the projectile travel horizontally