what?, I cant comment or else I would have, what are the questions?
Work = force x distance (you know them both)
Power = work / time (you know them both)
weight of water displaced=weight of sphere,
Since, plastic sphere floats in water with 50.0% of its volume submerged
so, water=2 sphere,
so sphere's density = 1/2 of water's density
Now, weight of glycerin displaced=weight of sphere,
Also given This same sphere floats in glycerin with 40.0% of its volume submerged.
so glycerin =2.5 sphere,
so sphere's density = .4 of glycerin's = 1/2 of water's.
So glycerin = 1.25 water
Their velocity (in m/s) just after impact if they cling together is -0.9 m/s.
Apply the principle of conservation of linear momentum;
Pi = Pf
(92.5)(5.5) + (116)(-6) = v(92.5 + 116)
508.75 - 696 = v(208.5)
-187.25 = 208.5v
v = -187.25/208.5
v = -0.9 m/s
Thus, their velocity (in m/s) just after impact if they cling together is -0.9 m/s.
Learn more about final velocity here: brainly.com/question/6504879