Posted by sara on .
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 1v'2/c'2)
&=1/square root 1v'2/c'2

Physic 
bobpursley,
use the second equation.

PDrwlsDrwls 
drwls,
The first equation lhas to do with length contraction. Use the second one
Set 1 + 5.0*10^13 = 1/sqrt[1  (v/c)^2]
Then solve for v, or v/c