4) A ball falls from a height of 16m. a. What is the acceleration of the ball as it falls? b. How long does it take to fall? c. How fast is it moving just before it hits the earth? 5) A girl throws a stone into the air at 9m/s. a. What is the acceleration of the stone? b. What is the maximum height it can reach? c. How long does it take to get to that maximum height? d. How long does it take to return to the girl's hand? 6) Take the data from On 5. However, the girl throwing the stone is standing on a roof of a building that is 10m above the ground. As the stone falls down, the girl misses the stone and it falls to the ground. By considering a. How long does it take to get to the max height? b. How far above the ground is the max height? c. How long does it take to fall from max height? d. How long in total is the stone in the air? e . 7) A red car and a blue car are having a race. The red car is already moving at a steady pace of 25m/s before the race starts. The blue car is starting from rest but accelerates at 1m/s2. If the race is 100m, who wins