posted by sara .
If a clock in an airplane is found to slow down by 5 parts in 1013, (i.e., ∆t/∆to = 1.0 + 5.0 × 10. −13), at what speed is the airplane traveling? (Hint: You might need to use an expansion for y)
I am not sure which equation to use can someone please help me.
L=L0(square root 1-v'2/c'2)
&=1/square root 1-v'2/c'2