TEST - KE and PE Flashcard

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 measured relative to the ground.

Front

Which object has the least gravitational potential energy?

Back

A ball sitting on the ground has the least gravitational potential energy compared to an airplane flying at 30,000 feet, the Moon viewed from Earth, or a rock on Mount Everest.

Front

What type of energy increases when you compress a spring?

Back

Elastic potential energy increases when you compress a spring.

Front

What two factors affect an object's kinetic energy?

Back

An object's kinetic energy is affected by its mass and speed.

Front

How do you calculate kinetic energy?

Back

Kinetic energy (KE) is calculated using the formula KE = 0.5 * mass * speed^2.

Front

If a rabbit of mass 3 kg hops at a speed of 0.5 m/s, what is its kinetic energy?

Back

The kinetic energy of the rabbit is 0.375 J.

Front

What is the formula for gravitational potential energy?

Back

Gravitational potential energy (PE) is calculated using the formula PE = mass * gravity * height.

Front

If a student holds a 5 kg egg with 8.0 J of gravitational potential energy, how far is their arm from the ground?

Back

The student's arm is 0.15 m from the ground.

Front

What is the relationship between mass and kinetic energy?

Back

Kinetic energy increases with an increase in mass, assuming speed remains constant.

Front

What happens to kinetic energy if the speed of an object doubles?

Back

If the speed of an object doubles, its kinetic energy increases by a factor of four, since KE is proportional to the square of the speed.