Time Dilation Help (1 Viewer)

[kingkong123]

Hi guys, i need help with this question please!

Mesons have a life of 2.2µs. However, mesons formed in the upper atmosphere as air particles are hit by cosmic rays take 16µs to reach the ground. Calculate the speed of the meson.

It's from Surfing Physics - Space by Brian Shadwick.

Thanks !!

 

[stampede]

16 = 2.2/(1-(v/c)^2)

dont you just use the time dilation formula