Calculating Energy

Front

What is potential energy?

Back

Potential energy is the energy stored in an object due to its position or height. It is calculated using the formula PE = mgh, where m is mass, g is the acceleration due to gravity, and h is height.

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How do you calculate gravitational potential energy?

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Gravitational potential energy (PE) is calculated using the formula: PE = mgh, where m is mass (in kg), g is the acceleration due to gravity (approximately 9.8 m/s²), and h is height (in meters).

Front

What is kinetic energy?

Back

Kinetic energy is the energy of an object in motion. It is calculated using the formula KE = 1/2 mv², where m is mass and v is velocity.

Front

How do you calculate kinetic energy?

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Kinetic energy (KE) is calculated using the formula: KE = 1/2 mv², where m is mass (in kg) and v is velocity (in m/s).

Front

What is the relationship between mass and kinetic energy?

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Kinetic energy is directly proportional to mass. If the mass of an object increases, its kinetic energy increases, assuming velocity remains constant.

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What is the effect of velocity on kinetic energy?

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Velocity has a squared effect on kinetic energy. This means that if the velocity of an object doubles, its kinetic energy increases by a factor of four.

Front

What is the formula for calculating weight?

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Weight (W) is calculated using the formula: W = mg, where m is mass (in kg) and g is the acceleration due to gravity (approximately 9.8 m/s²).

Front

How does height affect potential energy?

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Potential energy increases with height. The higher an object is positioned, the greater its potential energy, assuming mass remains constant.

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What is the unit of energy?

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The unit of energy is the Joule (J). One Joule is defined as the energy transferred when a force of one newton is applied over a distance of one meter.

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What is the significance of gravitational acceleration?

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Gravitational acceleration (g) affects both potential and kinetic energy calculations. It is approximately 9.8 m/s² on Earth and is crucial for determining the weight of an object.