3. A race car enters the circular portion of a track that has a radius of 67 m. When the car enters the curve at point P, it is traveling with a speed of 120 km/h that is increasing at 5 m/s?. Three seconds later, determine the x and y components of velocity and acceleration of the car. What is total velocity and total acceleration of car in terms of x and y coordinate system at 3 seconds? Hint: dv/dt = at = constant. Use constant acceleration equations to solve for v and s (distance around curve) at 3 seconds. Then s = R® will help you solve for angle 0. 120 km/h

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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.