i) A pile driver of mass m; falls from a height onto a pile of mass m2, driving the pile a distance s in to the ground. The pile driver remains in contact with the pile after the impact. A resistance force R opposes the motion of the pile into the ground. Elizabeth finds an expression for R as h(m) m²,+ m2) + m, + m2 nere g is the acceleration due to gravity.

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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.