Posted by yasin on .
Suppose you are on a spaceship of speed 0.8c and you flew horizontally above a circular stadium of radius 1km.what would be your calculated area of that stadium?

physics 
Elena,
At rest: circle
A=πR²
Motion with v=0.8c
r=Rsqrt(1β²)
=R(10.8²) =0.6R
Area of the ellipse
A₁=πRr=π0.6R² =0.6A