Why were the Russians unable to support their soldiers?

The Allied Powers became concerned at the collapse of the Eastern Front and the loss of their Tsarist ally to communism, and there was also the question of the large quantities of supplies and equipment in Russian ports, which the Allied Powers feared might be seized by the Germans.

Explanation:

ok, so basically your gonna start with 350 ok. so there's 60 seconds in a minute so that means you he can go up 10 ft per minute. soo, after 3 minutes he should be at 260 ft after three minutes : )

this is a good question! i'll do some research and come back when i have the answer!