1. PF Contest - Win "Conquering the Physics GRE" book! Click Here to Enter
    Dismiss Notice
Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Relativity homework problem help

  1. Apr 23, 2007 #1
    1. The problem statement, all variables and given/known data

    As measured in Earth's frame of reference, two planets are 491,000 km apart. A spaceship flies from one planet to the other with a constant velocity, and the clocks on the ship show that the trip lasts only 1.10 s. How fast is the ship traveling? (Enter your answer to 4 significant figures and in terms of c.)

    2. Relevant equations

    I tried using the equation delta t=d/v and converting the km to m, but that seemed way to easy....and I got the wrong answer. Then I tried delta t=delta t o / sqrt(1-v^2/c^2), but I wasn't sure what to plug in for the variables. Assuming that I am now on the right path, would I put in 1.1 for delta t? Would I even need anything for delta t o ?
  2. jcsd
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Can you offer guidance or do you also need help?
Draft saved Draft deleted