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I'm kind of confused about the question
But according to the Kardashev scale<span> there are 3 civilizations that life other civilizations want to get to
1. The civilization is confined to its own planet like humans and Earth (we suck)
2. A civilization harnesses the full power of there star through maybe a dyson sphere or more realistically a dyson swarm
3. And 3 is when a civilization harnesses the full power of there galaxy and many stars in it. </span>
They hold everything together. They may be small, But they do the biggest part.
Answer
(MG-24)
I pretty sure this the answer your looking for
This problem applies momentum balance over the cars collided
m1v1y + m2v2y = (m1 + m2)v'y
<span>0 + (1500 kg)(25.0 m/s) = (2500 kg)v'y </span>
<span>v'y = 15.0 m/s </span>
<span>Find the vector sum of the velocities: </span>
<span>v^2 = v'x^2 + v'y^2 = (8.00 m/s)^2 + (15.0 m/s)^2 </span>
<span>v = 17.0 m/s </span>
<span>find the angle: θ = tan^-1(15.0 m/s / 8.00 m/s) = 61.9° </span>
<span>now, the momentum: p = mv = (2500 kg)(17.0 m/s) </span>
<span>p = 4.25 x 10^4 kg x m/s at 61.9° N of E</span>