It's kinda tough, since we don't know the actual numerical locations of the points, only an approximate picture.
The big ball has 11 times the mass of the small ball, so the small ball is 11 times as far from the barycenter as the big ball is.
If any of the points is marked at the actual barycenter, it can only be point-A .
1N=1kg•m/s^2 so the answer is 3N
I believe the answer would be A, gravity.
The answer is D.)
In inelastic collision, when two objects collide, they stick together. Looking at the answer, it shows the before the collision, each object will have their own velocity but after the collision, they will have the same velocity. That's why the masses are added and only one velocity is multiplied.
Answer:
Mechanical waves require a medium, but electromagnetic waves do not.
