Potential/Kinetic Energy

Front

What is Potential Energy?

Back

Potential Energy is the energy stored in an object due to its position or configuration. It is often associated with gravitational energy, elastic energy, and chemical energy.

Front

What is Kinetic Energy?

Back

Kinetic Energy is the energy of an object in motion. It depends on the mass of the object and the square of its velocity, calculated using the formula KE = 1/2 mv².

Front

What is the formula for calculating gravitational potential energy?

Back

The formula for gravitational potential energy (PE) is PE = mgh, where m is mass (in kg), g is the acceleration due to gravity (approximately 9.81 m/s²), and h is height (in meters).

Front

What is the unit for energy?

Back

The unit for energy is the Joule (J).

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What is the unit for mass?

Back

The unit for mass is the kilogram (kg).

Front

What is the unit for velocity?

Back

The unit for velocity is meters per second (m/s).

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 kilograms and v is velocity in meters per second.

Front

What is the relationship between potential energy and height?

Back

Potential energy increases with height; the higher an object is positioned, the more potential energy it has due to the gravitational force acting on it.

Front

If a 6kg cat falls from a height of 5 meters, how much gravitational potential energy does it have?

Back

The gravitational potential energy is 294 J, calculated using PE = mgh (6kg * 9.81m/s² * 5m).

Front

If a 50kg person is running at 7m/s, how much kinetic energy do they have?

Back

The kinetic energy is 1225 J, calculated using KE = 1/2 mv² (1/2 * 50kg * (7m/s)²).