If a particle moves along a straight path in such a way that s = 2t3 + t2 feet, where t is in seconds, a. What kind of acceleration has it? b. Determine the acceleration when t = 5 sec. c. Find the velocity when t = 10 sec. 2. Let a = 1200 ft/min2 and vo = 100 in/s. At the end of 10 sec, a. Find s in inches. b. Determine v in in/s.

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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.