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Everything posted by FizziksGuy

  1. Another successful venture!!! Great job!
  2. That's the richest pauper I've ever heard of...
  3. Quite the aggressive goal. Might want to expand out that "pilot plan" a bit, as having thought through and researched the details could save a Kerbal life!
  4. Looking forward to reading about the launch!
  5. I really think you need a bowl of ice cream. With rainbow sprinkles. Perspective, HegelBot, perspective...
  6. And this one also nets your team an additional $7.5K
  7. I think this tutorial nets your team a bonus $7.5K.
  8. Great pre-launch briefing. Looking forward to hearing how it goes!
  9. Fantastic first mission! Love the name...
  10. Walk-through of the 2018 AP Physics 2 Free Response Questions. Questions can be found at https://apcentral.collegeboard.org/pdf/ap18-frq-physics-2.pdf For more information, please visit http://aplusphysics.com *AP and Advanced Placement Program are registered trademarks of the College Board, which does not sponsor or endorse this work.
  11. Walk-through of the 2018 AP Physics 1 Free Response Questions. Questions can be found at https://apcentral.collegeboard.org/pdf/ap18-frq-physics-1.pdf For more information, please visit http://aplusphysics.com *AP and Advanced Placement Program are registered trademarks of the College Board, which does not sponsor or endorse this work.
  12. Happy birthday to Mr. Gauss!!!
  13. It is the study of everything...
  14. Great stuff here... I've used circuits.io before, but hadn't seen tinkercad!
  15. Ever wonder how you make a logic gate? http://www.aplusphysics.com/courses/honors/microe/microe.html
  16. Starting to go off the rails a bit again... if you haven't been giving best effort, do so. Kick yourself in the fanny and get on with it. And if you have, be proud of what you've done and continue on. Regrets disappear when you give it your all. So get to it!
  17. Absolutely. Or write about what would happen if instead of a sphere, Earth was a disc. Or a ring (Discworld, anyone?) Figure out the thermodynamics of a Harry Potter spell, or the acceleration of Ironman in a Marvel movie. Make it fun.
  18. My goodness, not sure where to begin here HegelBot153... laughing over the blatant shilling for the APC Companion.
  19. Hi Maren, The positive/negative impulse implies direction. By Newton's 3rd Law, if the block applies an impulse to the ball of 10 N*s, the ball must apply an impulse back to the block of 10 N*s in the opposite direction, therefore the block experiences an impulse of -10 N*s. Since its mass is 0.5 kg, its change in velocity must be -20 m/s. If it's going 20 m/s in the positive direction, and experiences a change of -20 m/s, that leaves it at 0. Think of it this way. As the block travels to the right (positive direction) and hits the ball, it pushes the ball to the right, so the ball receives a positive impulse. Likewise, the ball must push the block to the left, so the block receives a negative impulse. This is not a realistic problem, but from a theoretical standpoint it walks you through some of the key points of momentum. The area under a force-time curve gives you the impulse (calculated in part A). In part B, you use the impulse-momentum theorem to find the change in the ball's velocity. In part C, you use Newton's 3rd Law coupled with the impulse momentum theorem to find the velocity of the block after the collision. And in part D, you utilize the definition of a elastic vs. inelastic collisions.

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