Block A begins its movement with initial velocity at t = 0 and constant acceleration of 270 mm/s to the right. Block C starts from rest at t = 0 and moves to the right with constant acceleration. If at t = 2 the velocities of A and B are 420 mm/s to the right and 30 mm/s to the left, respectively, determine (a) the acceleration of B, b) the initial velocities of A and B and c) the relative velocity of section D with respect to section E

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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.