2. If a particle starts from rest and accelerates according to the graph shown, the particle's velocity at t= 20 s is a 200 m/s b100 m/s C. 0 d. 20 m/s 3. The particle in Problem 2 stops moving at t= 10 s a. b. C. d. 40 s 20 s 30 s ww +76) -plz help

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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.