1. Limited time only! Sign up for a free 30min personal tutor trial with Chegg Tutors
    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!

Homework Help: A question about sepcial relativity

  1. Mar 24, 2008 #1
    An astronaut traveling on the Helios satellite (the fastest human made craft) goes on a trip to Jupiter and back in 75 days as measured by an observer on the Earth. If the average speed of the satellite is a quarter of a million km/h with respect to the Earth , what is the time difference ( in seconds) between the time recorded by the clock on the Earth and the one on board the satellite?

    honestly, i am realy confused on this part , can somebody help me?

    thx so much
  2. jcsd
  3. Mar 26, 2008 #2


    User Avatar
    Science Advisor
    Homework Helper

    Hi wowolala! :smile:

    Find the speed, v (as a multiple of c).

    Then the clock on the satellite will go slow by … ?

    Then multiply by the time (75 days converted into seconds). :smile:
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook