WILL GIVE BRAINEST + 500 PTS ... 1.Scientists have evidence that the universe is [expanding/shrinking].

2.Objects moving away from Earth appear [blue/red], and objects moving toward Earth appear [blue/red].

3. Light from most other galaxies appears [blue/red], which makes sense if the universe is [collapsing inward/spreading out].

The man of mass m1 and the woman of mass m2 are standing on opposite ends of the platform of mass m0 which moves with negligible friction and is initially at rest with s = 0. the man and woman begin to approach each other. derive an expression for the displacement s of the platform when the two meet in terms of the displacement x1 of the man relative to the platform.