This diagram represents a top-down view of an experiment on a table. the 250 g and 100 g masses are falling and are pulling the block. what is the location and minimum bumber of masses that

the answer is a. at the equator

when two balls of the different masses are dropped from equal height, they reach the ground at the same time .this is because they experience the same acceleration.

the acceleration is independent of mass.

thus when they are dropped they will always maintain the same velocity and travel the same distance (neglect air resistance of course) at the same time.

one "light year" is the distance that light travels, through vacuum, in one julian year.   that's 365.25 days, of 24 hours each.