Save As….

1. Save As…. • First Thing – Save this under a different Name so you can change it from a blank form to your own • Use the Save As… button to save your file with the period number first, then you team name then WRL (for water rocket lab) in the right period folder • For instance; if your team name is Rocko’s and you are in the 6th period, you would save your file as: • 6 Rocko’s WRL • in the 6th period folder in the Rocko’s folder • When you are finished saving, Delete this Slide

2. Group Name’s EggsPrize Lab Class Period Student ID #’s or initials (No Names) (Possibly a Movie Link to your rocket launch done later) (You can set the background as you like it) (Delete all the directions in the parentheses)

3. Eggs Prize Water Rocket Research • Use this slide to tell of the Original X-Prize and how Burt Rutan’s company called Scaled Composite’s won the prize • Tell how the Eggs Prize Contest was an offshoot of the X-Prize and what are the rules

4. Water Rocket Research • Tell the general concepts behind Water Rocketry • How are they made • How are they launched • What are some variations that have been made

5. Egg Drop Research • Tell the general concepts behind the Egg Drop Labs • How are they made • Where do the labs take place • How high are they dropped from • What are some variations that have been made

6. Film Canister Rocket Research • Tell the general concepts behind Film Canister Rocketry • How are they made • What are the propellants – tell the two different ways that CO2 gas is produced • How are they launched • What are some variations that have been made

7. Parachute Ideas • Quick Descriptions of any Parachute Ideas for Water Rockets found on the web

8. Summary of Research • Describe how you can combine the research to create a Second Stage of a water rocket that will pop out a Parachute

9. Initial Observation • (Use clarity of Observation section of the Lab to fill this part out) We used foam and composite construction like Burt Rutan’s Space Ship One • Initial Observation 5 points • Describe How you designed your rocket • Show a Picture of your Rockets Design with Labels • Materials List • Used Full Sentences • Descriptive and Accurate Word Choice • Good use of Graphics

10. Hypothesis • The egg will survive a 31 meter fall in our water rocket capsule.

11. Test Hypothesis • The egg broke • Or The Rocket did not climb to 30 meters • Or (If it did climb 30 meters and it did not break) The Egg Survived the 30 meter fall

12. Test Observations • The crashed Rocket appeared to have taken some major stress from hitting the ground… • Test Observation 6 points • Described The Crashed Condition of your Rocket and Egg • Draw a picture of the crashed rocket or insert its photo • Use Full Sentences • Descriptive and Accurate Word Choice • Good use of Graphics • [Crashed Rocket picture here}

13. Conclusions • Included The Formula for height: h=1/2 x G x t2 where G = 9.81 m/s2 • Calculate the Height of your rocket based on the Time Down • Round your answer to the right number of significant figures • Does this number seem reasonable? Why or Why not? • Explained and showed graphically what caused the egg to survive or break apart or why the rocket did not go high enough • Based on what you learned what would you do differently for a low tech rocket? • What part of your rocket worked well? • Do you believe that we have found an accurate way to tell how high our rockets went? Why or Why not? • 3 Points for each of the above • [Picture of Broken or Whole Egg here]

14. Using the Video and a stop watch, Time the Rocket from the top to the ground (t) Find the greatest height (h) that your rocket achieved h = ½ at2 a=gravitational acceleration (9.8m/s2) Did your rocket make the 31 meter requirement? Let’s start with a rocket who’s mass is 230 grams and that fell for 2.5 seconds h = ½ at2 h = ½(9.8m/s2)(2.5s) 2 h=(4.9m/s2 )(6.25s2) h=30.625m =31m rounded to two significant figures Rocket Math - Height

15. Determine the Potential energy for the rocket at its highest point PE=mgh PE=Potential Energy m=mass in kilograms g=gravitational constant (9.8m/s2) h=height In my example, m=230g and we discovered the height was 31 meters PE=(0.23 kg)(9.8 m/s2)(31 m) PE=69.874 kg●m2/s2 =70 J (remember that a N●m = a joule and a Newton = kg●m/s2 ) Rocket Math – Potential Energy

16. What was its greatest Kinetic Energy (KE) just before it struck the ground KE = ½ mv2 What was its velocity at that point? KEbottom = PEtop In my example, Pet = 70 J = KEb KEb = ½ mv2 PEt = mgh So ½ mv2 = mgh Then cancel mass out of both ½ v2 = gh Now solve for v2 v2 = 2gh So it doesn’t matter how much mass something has – only its height v2 = 2(9.8 m/s2)(31 m) v2 = 607.6 m2/s2 Now solve for v v=24.649 rounded to 25 m/s Rocket Math – Kinetic Energy

17. Find the force that your rocket had after launch F = ma a = gravitational acceleration in this case = 9.8 m/s2 Mass needs to be in kilograms F =ma F = (0.23kg)(9.8 m/s2) F = 2.254 kg●m/s2 = 2.3 N How much work did the Rocket do from the top to the ground? W = Fd (d=distance so what will we use for d?) Newton ● meters is the same as a Joules Now How much work does the rocket do from top to bottom? W = Fd W = 2.3 N ● 31 m = 71 J Rocket Math – Force and Work

18. Rocket Math - Power • Power=Work/time • P=W/t • In my case, Work was 71 J and time was 2.5 sec. • Joules per second = watts • 71/2.5=28 watts • Think of light bulbs and lets discuss how much power this is.