Question 1: Rocket #1
Question 2: Rocket #3, the hight was 65 meters, 4 seconds
Question 3: Rockets #2 & #3
Question 4: Rocket #1 was launched from 5 meters, Rocket #2 was launched from 20 meters, Rocket #3 was launched from 10 meters
Question 5: Rockets #2 & #3, the height was 45 meters in 1 second
Question #6: Rockets #2 & #3
I can’t see part B of question #6 because your peardeck notification is covering it up. I hope I was helpful!