i need help with this

5. During a soccer game, Pavle headed the ball. The ball went straight upwards, so he was able to head it again from the same height (exactly 6.0 feet) 0.75 seconds later. a) What maximum height did the ball reach? (hint: 1.00 foot = 0.3048m) b) With what velocity did Pavle head the ball? 6. While on vacation, Freeda decides to go scuba diving. Listening to her dive master very carefully, she begins from rest and speeds up as she gets deeper, all with uniform acceleration of course (she may be a bit of a perfectionist). If she descends to 14.7 5m underwater in 4.24 minutes, what is her average acceleration in 111st ? 7. Oren spits his gum out a window with an initial velocity of 2.15 m/s at an angle of 24" above the horizontal. a) How long would it take the gum to hit the ground 8.25 m below? b) What would the gum's horizontal and vertical velocities be just before landing? 8. During an intense lunchtime soccer game, Mohammed is trying to score a goal to impress the girls. He kicks the ball from the ground from 8.36 m directly in front of the net. He kicks it with an initial velocity of 12.4 m/s at an angle of 22\" above the horizontal. If the net is 2.80 m tall, will the ball go into the net or over it? 9. A military ofcer res a warning shot into the air with an initial velocity of 160 m/s at an angle of 800 above the horizontal. a) How long would it take the bullet to reach the ground? b) With what velocity would it reach the ground? c) How far in front of the military ofcer would it hit the ground