Timeframe is roughly 1 second. TO find the distance, we'll angscale off the Earth by finding the Earths radius.
R = (h/2) + c^2/(8h)
= (204/2) + 1018^2/(8 X 204)
= 737.002451 pixels
That's for the radius of the Earth, so we'll double it for the diameter of the Earth, that being 1474.0049 pixels.
= 2*atan(972/(737.002451/tan(70/2)))
= 1.1170452 rad
= 64.00197548550571 degrees
The diameter of the Earth (at the equator) is
12,756km. Then we use an angscaling calculator (usually I use
this one) to get a result of 1.0207e+4km (which is 10207km). To get the speed, I divide by the speed of sound at sea level (340.29m/s.
T = 10000km/1s
= 10000000/340.29
=
Mach 29386.6996
To assume a mass just this once, I'm going to assume it weighs 0.1kg
M = (0.5)mv^2
= (0.5) X 0.1 X 10000000^2
= 5.0e12 joules
=
1.195028680688337 kilotons