100 kg particle moves with a velocity of (-2 m/s)i + (5 m/s)j.  A 50 kg particle moves with a velocity of (1 m/s)i + (5 m/s)j.  If the particles collide and stick together, what is velocity of the stuck-together particles post-collision? (1 m/s)i + (5 m/s)j (-1 m/s)i + (5 m/s)j (1 m/s)i + (1 m/s)j (-1 m/s)i + (-1 m/s)j

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Conservation of Energy

In physics, the rule of the conservation of energy states that energy doesn’t disappear from the atmosphere; instead, it changes its form from one type to another. Energy is one of the most important physical quantities in nature, and it cannot be created or destroyed — only transformed.