The 13.9-in. spring is compressed to a 8.9-in. length, where it is released from rest and accelerates the sliding block A. The acceleration has an initial value of 370 ft/sec² and then decreases linearly with the x-movement of the block, reaching zero when the spring regains its original 13.9-in.length. Calculate the time t for the block to go (a) 2.5 in. and (b) 5.0 in. 8.9 -13.9" wwwwwww

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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.