If Galileo and his assistant were 16 \ km apart, how long would it take light to make the...

Question:

If Galileo and his assistant were {eq}16 \ km {/eq} apart, how long would it take light to make the round-trip? How does this time compare with reaction times of about {eq}0.4 \ s {/eq}?

Uniform Motion

If the velocity of a particle is constant, then we call it a uniform motion. The distance traveled by a particle in uniform motion is given by the product of the speed of particle and the time interval of the motion. Higher the speed of the particle, more will be distance covered in a fixed time.

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Given :

  • The distance between Galileo and his assistant is, {eq}d = 16 \ km = 16000 \ m {/eq}
  • The reaction time is, {eq}t_r = 0.4 \ s {/eq}
  • The...

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How to Solve Uniform Motion Problems

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Chapter 10 / Lesson 5
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Uniform motion problems use words to describe objects at consistent speeds, and can be easily translated into equations of distance, rate, and time. Practice the formula in the example problems, and watch out for features in problems that add complexity.


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