physicssss

7. A cliff diver on an alien planet dives off of a 32 meter tall cliff and lands in a sea of hydrochloric acid 1.20 seconds later. Assuming that the extra-terrestrial's initial speed was zero, what is the free fall acceleration of this strange world? (Answer: a=-44.44m/ s) 8. I drop a penny from the top of a tower and realize that it takes 1.85 seconds to hit the ground. Calculate the velocity in m/s after 1.1 sec and at impact with the ground. (Answer: -11 mls, -185 m/s) 9. Drop a watermelon from the top of one of the tower dorms at the U of M, and it takes 3.34 seconds to hit the ground, calculate how tall the building is.(Answer: 55.78 m) 10. You are walking in Paris alongside the Eiffel Tower and suddenly a croissant smacks you on the head and knocks you to the ground. From your handy dandy tourist guidebook you find that the height of the Eiffel Tower is 300.5 m. You are 1.7 m tall. Neglecting air resistance and assuming that the croissant was dropped from the top of the Eifel tower, calculate how many seconds the croissant dropped before it tagged you on the head.(Answer:7.73 sec) 11. During the latter part of your European vacation, you are hanging out at the beach at the gold coast of Spain. As you are laying in your chaise lounge soaking up the warm Mediterranean sun, a large glob of seagull poop hits you in the face. Since you are doing really good in your physics class, you are able to estimate the impact velocity at 98.5 m/s. Neglecting air resistance, calculate how high up the seagull was flying when it pooped.(Answer :485.11 m)