Pirates Of The Caribbean and Projectile Motion:         Rachelle Vaughn   rbv104@psu.edu   

Projectile motion- The path an object travels through space.

I am Proving that Jack will not be able to make it clear across the cliff by launching himself into the air with the stick tied to him.

Projectile Motion

Captain Jack gets tied to a bamboo stick and he gets hunted and gets fruit thrown at him which ironically gets stuck to each end of the stick. He tires to escape by  a catapulting launch with the top of the stick across the cliff.

Movie Explanation

 Stick length- .09 m  Mass weight- 185 lbs Time- 3.80 seconds Distance- .34 m Starting angle-40°

Estimates

D=Vxt   34m = Vx(3.8)                Vx = VicosΘ 34m/3.8                            8.95m/s = Vi (cos40°) Vx = 8.95 m/s          Vi = 11.68 m/s (3600s)(  1min  )                                                                 hr      1609m                                                        Vi = 26 mph  Explanations:    I first took the first equation which was distance =  velocity x

time which gave me the distance that he was running. The second equation I  simply plugged in the distance to the equation to find the speed that he was running and after multiplying anf dividing out the numbers that were found I got that Jack was running 26mph.

 

Calculations

D=Vxt Vx=Vi cos Θ H=1/2 gt 2

Formulas

What should have happened.....

Vx= 8.95m/s

*If he was running at 8.95m/s he would be going down when running off the cliff. He would drop a total of 47m, which is halfway down the cliff from where he originally landed.*

Top speed of an olympic sprinter- 2.31 m/s He was running  11.68 m/s He is going 5 times the speed of an olympic sprinter.   In the calculations I found Jacks speed which was

26mph. After plugging the olympic runners speed in we got 5.17mph. That wouldd prove that Jack is running 5 times the speed of an olympic runner.

     **** Vx = VicosΘ****  2.31m/s = (3600)(   1   )    Vx = 5.17 mph                        hr      1609                                 

Comparison

In conclusion Captain Jack will not be able to make it clear across the cliff because he will come too short of the other edge.

Conclusion

 "Johnny Depp - Wikipedia, the Free Encyclopedia." Main Page - Wikipedia, the Free Encyclopedia. Web. 12 Apr. 2010. <http://en.wikipedia.org/wiki/Johnny_Depp>.

 Online Conversion - Convert Just about Anything to Anything Else. Web. 12 Apr. 2010. <http://www.onlineconversion.com/>.

Works Cited