5470 Conservation of Energy (PEg, KE only)

Front

What happens to gravitational potential energy as an object moves downhill?

Back

Gravitational potential energy decreases.

Front

If two objects have different masses but reach the same height, how do their final speeds compare?

Back

They have the same final speed when they reach the bottom.

Front

What is the relationship between kinetic energy and gravitational potential energy in a frictionless system?

Back

As gravitational potential energy decreases, kinetic energy increases, and vice versa.

Front

What is mechanical energy?

Back

Mechanical energy is the sum of kinetic energy and gravitational potential energy in a system.

Front

What is the principle of conservation of energy?

Back

The total energy in a closed system remains constant; energy can neither be created nor destroyed, only transformed.

Front

What happens to total mechanical energy during a collision?

Back

Total mechanical energy can be lost due to non-conservative forces like friction, sound, and heat.

Front

What type of energy is constant when a ski lift moves at constant speed?

Back

Kinetic energy remains constant.

Front

What type of energy increases as a ski lift carries passengers up a mountain?

Back

Gravitational potential energy increases.

Front

What is an example of energy transformation in a swing?

Back

At the highest point, kinetic energy is transformed into gravitational potential energy.

Front

What is the formula for gravitational potential energy?

Back

PEg = mgh, where m is mass, g is acceleration due to gravity, and h is height.