6. (10 points) It's 2022, Santa doesn't want to use reindeer anymore, so he built a rocketship to help deliver presents. On a test flight Santa flew vertically upwards at a speed of 11.1 m/s. The moment when Santa reached 10.0 meters above the level ground while flying vertically up- wards, a present is released from the rocket. *Ignore air resistance y f (a) What is the maximum height above the level ground that the present will reach? VFy = Uy + Lay dy 1502 V = 1 K uk 0 = (11.1) - 2(9.8) DY, 1.1 m/s Ayol 49, = 6.27m 6.27M to -9.875" TOTAL HEIGHT = 10m + Ay.. TOTAL HEIGHT 16.3 M (b) What is the total time in the air from the moment the present was released from the rocket to the moment before it hits the level ground? METHOD 11 1 STAGE QUADRATIC i F METHO 2/2 STAGES STAGE I F STAGE 2 i f -2 y k Uk k Ayaz = 40m y 3 UK Vy Vay = Vis + ag st 0 = 11.1 -9.8 Atol 4y=-16.27 Rubric ~~