Conservation of Energy

Front

What is the law of conservation of energy?

Back

The law of conservation of energy states that energy cannot be created or destroyed, only transformed from one form to another.

Front

What is potential energy?

Back

Potential energy is the energy stored in an object due to its position or configuration, often related to its height above the ground.

Front

What is kinetic energy?

Back

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

Front

At which point is potential energy greatest in a vertical motion scenario?

Back

Potential energy is greatest at the highest point of the object's motion.

Front

How does velocity affect kinetic energy?

Back

Kinetic energy increases with the square of the velocity; if velocity triples, kinetic energy increases by nine times.

Front

What types of energy are present when a person climbs a ladder?

Back

Both potential energy (due to height) and kinetic energy (due to movement) are present.

Front

What is the formula for calculating gravitational potential energy?

Back

Gravitational potential energy (PE) is calculated using the formula PE = mgh, where m is mass, g is acceleration due to gravity, and h is height.

Front

If a 5.0 kg object is pushed and the net work done is 30 J, what is the change in kinetic energy?

Back

The change in kinetic energy is equal to the net work done, which is 30 J.

Front

What happens to kinetic energy when mass is doubled while keeping velocity constant?

Back

Kinetic energy doubles when mass is doubled, as KE = 1/2 mv².

Front

What is the relationship between work done and energy?

Back

Work done on an object results in a change in energy, specifically kinetic energy if the object is in motion.