Potential and kinetic energy calculations 1

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What is gravitational potential energy?

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Gravitational potential energy (GPE) is the energy an object possesses due to its position in a gravitational field. It is calculated using the formula: GPE = mgh, where m is mass (kg), g is the acceleration due to gravity (9.8 m/s²), and h is height (m).

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How do you calculate gravitational potential energy?

Back

To calculate gravitational potential energy, use the formula: GPE = mgh, where m is the mass of the object in kilograms, g is the acceleration due to gravity (9.8 m/s²), and h is the height in meters.

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What is kinetic energy?

Back

Kinetic energy (KE) is the energy an object has due to its motion. It is calculated using the formula: KE = \frac{1}{2}mv^2, where m is mass (kg) and v is velocity (m/s).

Front

How do you calculate kinetic energy?

Back

To calculate kinetic energy, use the formula: KE = \frac{1}{2}mv^2, where m is the mass of the object in kilograms and v is the velocity in meters per second.

Front

What is the formula for gravitational potential energy?

Back

The formula for gravitational potential energy is: GPE = mgh, where m is mass (kg), g is the acceleration due to gravity (9.8 m/s²), and h is height (m).

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What is the formula for kinetic energy?

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The formula for kinetic energy is: KE = \frac{1}{2}mv^2, where m is mass (kg) and v is velocity (m/s).

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Calculate the gravitational potential energy of a 1 kg book on a shelf 2 meters high.

Back

GPE = mgh = 1 kg * 9.8 m/s² * 2 m = 19.6 J.

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Calculate the kinetic energy of a 50 kg skateboarder moving at 10 m/s.

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KE = \frac{1}{2}mv^2 = \frac{1}{2} * 50 kg * (10 m/s)^2 = 2500 J.

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What is the gravitational potential energy of a 0.45 kg soccer ball at a height of 20 meters?

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GPE = mgh = 0.45 kg * 9.8 m/s² * 20 m = 88.2 J.

Front

Calculate the kinetic energy of an 800 kg roller coaster at a speed of 25 m/s.

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KE = \frac{1}{2}mv^2 = \frac{1}{2} * 800 kg * (25 m/s)^2 = 250,000 J.