Recent content by unicorn

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    High School A question about average velocity?

    Almost correct. You can calculate average speed this way only when speed changes linearly (so acceleration is constant). Then average speed equals speed at the beginning (v1) + speed at the end (v2) of the movement /2. But you can calculate average speed as said: s/t anytime.
  2. U

    Graduate What Determines the Speed of Light and Its Limitations?

    Well, it travels slower through atmosphere... :wink:
  3. U

    Graduate Can the Speed of Light Be Changed and What Does It Mean for Space Exploration?

    And what is your opinion about tachyons, do they exist? Sorry if anyone asked this before.
  4. U

    Predict Questions on Teacher Tests

    And it's more likely solution will be number like 7/9 then 16541616313/54687435153435... :wink:
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    Undergrad Is 0.999... Truly Equal to 1?

    I am new around here, so I don't know if anybody presented this already, but here goes: 0.999999...=x 10x=9.99999...=9-0.99999...=9-x 9x=9 x=1 And yes, sum of infinite geometrical series is one particular value when b(n+1)/b(n)<1. It's like in Zono's paradox with Achileus and a turtlle...