Unit 4

On monday we continued to learn about unit 4 and projectile motion. The picture above is a great example of projectile motion. My friend is jumping off the pole and if I calculated the height of the pole from the water, and the speed she is moving at, I could figure out where she would land in the water. I could figure out this out by using dimensional kinetics which we have learned all about in this unit. In  types of problems we are using x and y distances, accelerations, times, velocities and original velocities.  It takes a lot of organization and the use of DAT, VAT & VAD. For most of these problems the X acceleration is 0 m/s2 and the Y original velocity is 0 m/s, but it really depends on the problem. 

Air Rocket Lab

On monday we also played with rockets. Rockets are a great example of projectile motion. We shot up our rockets using 4 different caps and doing 3 trials per cap. Then we decided which cap was the most consistent. Using the times from the most consistent cap we figured out the average time and initial velocity. Mr. Blake gave us an angle that we would be firing with, we then used our angle and trig to figure out the distance that our rocket would land at. It took a lot of work, organization, and math but my group finally came up with a distance for where our rocket would land. When we went to test our distance, we were very wrong though. I think some errors in our experiment might have been organization, direction of wind, our gas pump and our white cap which was very broken.