Fun Fact 1: There are many different forms of energy which include: thermal, chemical, electrical, solar and nuclear energy. The various types can be divided into two main groups; potential energy and kinetic energy.
Fun Fact 2: This particular section focuses on kinetic energy which refers to movement and motion. Kinetic energy only ever occurs when movement is involved.
Fun Fact 3: It is important to remember than kinetic energy does not occur when an object is standing still. When an object is at a standstill, is has potential energy.
Fun Fact 4: All objects have kinetic energy when they are moving. The list of kinetic energy objects is endless and ranges in size from tiny to huge. Kinetic objects include: atoms, footballs, motor cars, roller coaster cars, the planets.
Fun Fact 5: All movable things and objects have kinetic energy whether the motion is vertical or horizontal. How many Kinetic objects can you think of?
Fun Fact 6: Kinetic energy is a scalar quantity, which means its quantities only have magnitude; for example: mass, temperature and volume.
Fun Fact 7: Kinetic is a type of energy which can be transmitted or passed on from one object to another. A game of tenpin bowling is a good example of this. Energy is passed on from one object to another when they collide, in this example, the ball and skittle. The person bowling a ball will create kinetic energy when the bowling ball is released and begins to move. The ball will then hit a skittle, causing the skittle to move as it gains kinetic power
Fun Fact 8: In the example above, the harder the bowling ball is thrown, the more kinetic energy it will produce and the faster the ball will travel. The same theory applies to all objects. The more weight behind an object, the faster it will travel thus producing more kinetic energy.
Fun Fact 9: To understand how to calculate kinetic energy, first you must understand that the amount depends on the speed and mass (mass means heaviness/weight) of a moving object.
Fun Fact 10: When using formulas and calculations, it is important to remember than kinetic energy is measured in Joules - this is the standard metric unit of measurement which is used.
Fun Fact 11: What is the basic formula for calculating kinetic energy? The basic formula which can be used for calculating kinetic energy is: KE = ½ × m × v2
Fun Fact 12: The following description breaks the formula for calculating kinetic energy down which will make it easier to understand: KE (KE is the kinetic energy which is measured in joules, J) =½ x m (m is mass which means weight in kilograms, kg) x v2 (v is the objects speed in metres per second, m/s) squared
Fun Fact 13: An example of how the formula above can be used to calculate kinetic energy is as follows:
How to calculate the kinetic energy of a 400kg roller coaster car moving at a speed of 20 m/s:
Formula: KE = 0.5 × 400 × 20² (KE = 0.5 x 400 x 400)
Answer: The Kinetic Energy = 80000 Joules or 0.8 x 105 Joules
Fun Fact 14: When working with joules, the following formula applies:
1 Joule is equivalent to 1 kg*(m/s)^2.
Fun Fact 15: Using the correct formulas it is easy to calculate the kinetic energy of any moving object, or the impact of objects colliding. |