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Mnemonics: Kinetic Energy | Basic Science for JSS 2 PDF Download

1. Ideal Gas Equation

"Pressure Volume Takes Right Turns."

  • Formula: PV=nRT
    Pressure × Volume = Number of moles × Gas constant × Temperature.

2. Boyle's Law

"Big Volume, Less Pressure."

  • At constant temperature: P1VP \propto \frac{1}{V}
    Pressure is inversely proportional to volume.

3. Charles' Law

"Charles' Balloon Loves Heat."

  • At constant pressure: VTV \propto T
    Volume increases with temperature.
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FAQs on Mnemonics: Kinetic Energy - Basic Science for JSS 2

1. What is the formula for calculating kinetic energy?
Ans.The formula for calculating kinetic energy (KE) is KE = 1/2 mv², where "m" is the mass of the object in kilograms and "v" is its velocity in meters per second.
2. How does kinetic energy change with speed?
Ans.Kinetic energy increases with the square of the speed. This means that if the speed of an object doubles, its kinetic energy increases by a factor of four, assuming the mass remains constant.
3. What are some real-life examples of kinetic energy?
Ans.Real-life examples of kinetic energy include a moving car, a flying baseball, a flowing river, and a person running. All these objects possess kinetic energy due to their motion.
4. How is kinetic energy related to potential energy?
Ans.Kinetic energy and potential energy are related through the law of conservation of energy. In a closed system, the total energy remains constant; as potential energy increases (e.g., an object being lifted), kinetic energy decreases, and vice versa.
5. Can kinetic energy be converted into other forms of energy?
Ans.Yes, kinetic energy can be converted into other forms of energy. For example, when a moving car brakes, its kinetic energy is transformed into thermal energy due to friction, which is why brakes heat up.
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