Calculating Potential and Kinetic Energy

Front

What is gravitational potential energy?

Back

Gravitational potential energy is the energy an object possesses due to its position in a gravitational field, calculated as PE = mgh, where m is mass, g is the acceleration due to gravity, and h is height.

Front

What factors affect gravitational potential energy?

Back

Gravitational potential energy depends on the height and mass of the object.

Front

How do you calculate gravitational potential energy?

Back

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 an object has due to its motion, calculated as KE = 1/2 mv², where m is mass and v is velocity.

Front

How do you calculate kinetic energy?

Back

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 unit of energy in the International System of Units (SI)?

Back

The unit of energy in the SI system is the Joule (J).

Front

If a 20 kg clock is at a height of 45 m, what is its potential energy?

Back

The potential energy is 8820 J, calculated using PE = mgh (20 kg * 9.8 m/s² * 45 m).

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What is the potential energy of an 85 kg climber at the top of a 6267 m volcano?

Back

The potential energy is 5,220,411 J, calculated using PE = mgh (85 kg * 9.8 m/s² * 6267 m).

Front

Calculate the kinetic energy of a 10 gram ball rolling at 3 m/s.

Back

The kinetic energy is 45 joules, calculated using KE = 1/2 mv² (0.01 kg * (3 m/s)²).

Front

What is the gravitational potential energy of a 2 kg apple hanging 3 m off the ground?

Back

The gravitational potential energy is 58.8 J, calculated using PE = mgh (2 kg * 9.8 m/s² * 3 m).