1-06

We last left Mr. Physics stricken with grief at the abandonment of his son. He was so heartbroken he gave up acting altogether, and decided to try showing dogs. At a dog show. But Mr. Physics did not have a dog, so he tracked down his buddy GBTL the caveman and attempted to shave him in the proper fashion as required to compete.



However, GBTL was afraid of the hairdryer and ran away from Mr. Physics at 66m/s (GBTL was secretly a Jedi master so he could run that fast). Mr. Physics could only run at about 3m/s because he is middle aged and has an eating problem. He was instantly jealous of GBTL’s secret Jedi talents. Mr. Physics, a master of physics, knew that the could catch GBTL if he could find a ridiculously unrealistic impulse to help him accelerate. He first needed to calculate both his and GBTL’s momentum.

GTBL weighs 500kg, and Mr. Physics weights 100kg. Momentum = mass times velocity GBTL’s momentum: 500kg time 66m/s = 33000kgm/s Mr. P.’s momentum: 100kg times 3m/s = 300kgm/s

Then Mr. P. had to find how much of an impulse, or change in momentum, he needed to catch GBTL. Impulse = the summation of F times the change in time. Change in momentum = impulse Mr. P.’s initial momentum is 300kgm/s. He wants to increase his momentum to 33000kgm/s. So his momentum needs to increase by 32700kgm/s. The change in momentum is 32700kgm/s.

So, Mr. Physics strapped himself to a rocket ship with duct tape and some K’nex pieces to increase his momentum to 33000kgm/s. He caught up to GBTL, and failed miserably at the dog show. GBTL ate a judge.



Mr. Physics thought all hope was lost, until he remembered he had physics homework to do. Who cares about being a complete failure if you can do physics problems, right? So Mr. P. did number 7 to 11 on the Impulse and Momentum Questions worksheet. The end.