The acceleration of a particle is defined as a = 9 – 3t2. The particle starts at t = 0 with v = 0 and x =5 m. Determine: 1. The time when the velocity is again zero. 2. The position and velocity when t = 4 s Select one: A. t 3; x(4) = 13 m and v(4) =-28 m/s %3D %3D B. t = 1; x(4) = 13 m and v(4) = -28 m/s %3D C. t 0; x(4) = 13 m and v(4) -28 m/s %3D D. t = 3; x(4) = 13 m and v(4) = 28 m/s %3D

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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.