You are boating near shore at twilight. you see a square-shaped daymark. you cannot make out the marker's color. what color is it?

The square daymarks are always green and indicates the left side of the channel as the boat moves upstream. Green square day marks are also equivalent to cans while the triangular daymarks are red that indicates the right side of the bank or equivalent to nuns.

f=gm1m2/d^2 it d

f is force g is gravitaiton constant, m1 is mass of first object, m2 is mass of second object. d is distance between two object