Mechanical Energy: Riding On A Roller Coaster

2154 Words5 Pages

WORK, POWER AND ENERGY

Have you wondered how a roller coaster works? Can you describe your experience while riding on a roller coaster? How did cyclist reach a maximum height of a trail? How can an object at rest be moved at a certain distance? Is there work done? In this chapter, you will learn what describes the forms of energy and explains the transformation of mechanical energy.

Content Standard
 Demonstrate understanding of the conservation of mechanical energy
Performance Standard
 Create a device that shows conservation of mechanical energy
Learning Competencies
 Explain energy transformation in various activities/events (e.g., waterfalls, archery, amusement rides);
 Perform activities to demonstrate conservation of mechanical energy
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It has many forms and its two basic kinds are the kinetic energy and the potential energy.

All objects have mass and whether these are at rest or moving, they possess energy.
A ball rolled on a ramp, a switched on the battery operated car, a bowling ball rolled on a surface, running water, a falling object from a greater height, electric charges, water molecules, a fast or slow moving truck, an airplane in the sky, an approaching ship and even a pendulum clock similar to a swing, are just some example of moving objects. These bodies possess energy due to their motions and scientifically called kinetic energy from the Greek word kinetos (moving).

Mathematically,

So, what are the factors affecting the kinetic energy of the object? These are the mass of the object and its velocity.

What happens to the kinetic energy of the object as mass and velocity are changed?

The massive the object is, the higher the kinetic energy at constant velocity and doubling the speed of the object will result to four times increase in kinetic energy at constant

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