A box of negligible size is sliding down along a curved path defined by the parabola y=0.40x2. When it is at A (2, 1.6), the speed is 12m/s and the tangential acceleration is 6 m/s2. What is the radius of curvature at A? a. 11.45 m        b. 10.30 m c. 9.09 m          d. 8.40 m

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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.