Problem 2.1 asks students to calculate the Lorentz factor for an object moving at 0.6c relative to an observer. Using the equation above, we can plug in the values:
where v is the relative velocity between two observers and c is the speed of light. Arthur Beiser Modern Physics Solutions Of Chapter 2 Pdf
where t' is the time measured by the astronaut and t is the time measured by the observer on Earth. Problem 2
t' = 1.67t
L' = L / γ