Energy Calculations

Front

What is kinetic energy?

Back

Kinetic energy is the energy an object possesses due to its 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?

Back

Kinetic energy (KE) is calculated using the formula: KE = 1/2 mv², where m is the mass of the object in kilograms and v is its velocity in meters per second.

Front

What is gravitational potential energy?

Back

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

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 kilograms, g is the acceleration due to gravity (approximately 9.81 m/s²), and h is height in meters.

Front

What is the work done on an object?

Back

Work done is defined as the energy transferred to or from an object via the application of force along a displacement. It is calculated using the formula: Work = Force x Distance.

Front

How do you calculate work done?

Back

Work done (W) is calculated using the formula: W = Fd, where F is the force applied in newtons and d is the distance moved in meters.

Front

What is the principle of conservation of energy?

Back

The principle of conservation of energy states that energy cannot be created or destroyed, only transformed from one form to another. The total energy in a closed system remains constant.

Front

What happens to kinetic energy when an object collides with another object?

Back

In a collision, kinetic energy can be transferred from one object to another. If the collision is elastic, total kinetic energy is conserved; if inelastic, some kinetic energy is transformed into other forms of energy.

Front

What is an elastic collision?

Back

An elastic collision is a collision in which both momentum and kinetic energy are conserved. The objects bounce off each other without any loss of total kinetic energy.

Front

What is an inelastic collision?

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An inelastic collision is a collision in which momentum is conserved, but kinetic energy is not. Some kinetic energy is transformed into other forms of energy, such as heat or sound.