Question

A certain automobile is 6.0 m long if at rest. If it is measured to be 4.8 m long while moving, its speed is:

Answer 1

1.8*10^8m/s

Step-by-step explanation:

Using

L= lo√1-v²/c²

So making v subject we have

V= c√1-4.8²/6²

V= 0.6*c

V= 0.6*3E8m/s

V= 1.8*10^8m/s