## Special relativity - time dilation

1. The problem statement, all variables and given/known data

Lights are placed at points A and B, which are 100m apart as measured in the rest frame of the earth. As a rocket moving at speed v = 3/5c, passes point A the light turns on. As the rocket passes point B, the second light turns on.
As read on the rockets clock, the time difference between the events was Δtr. Clocks synchronized in the rest frame of the earth measure a time interval Δte between the events.

a) Determine Δte.
b) Determine Δtr using time dilation.

2. Relevant equations

Δte = d/v (where d = 100m)

Δtr = 1/sqrt(1-(v/c)^2)Δte

3. The attempt at a solution

Δte = 5.56 x 10^(-7) s
Δtr = 6.94 x 10^(-7) s

However I'm unsure as to whether I've used the right times for the different values of t.
 PhysOrg.com science news on PhysOrg.com >> King Richard III found in 'untidy lozenge-shaped grave'>> Google Drive sports new view and scan enhancements>> Researcher admits mistakes in stem cell study
 looks good to me, i got the same answers

 Tags dilation, relativity, special, time