Potential & Kinetic Energy Review Day 3

Front

What is the definition of 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 the definition of kinetic energy?

Back

Kinetic energy is the energy of an object in motion, calculated as 1/2 mv², where m is mass and v is velocity.

Front

How does potential energy change as an object falls?

Back

As an object falls, its potential energy decreases while its kinetic energy increases.

Front

What factors affect the potential energy of an object?

Back

The potential energy of an object is affected by its mass and height above the ground.

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, g is the acceleration due to gravity, and h is height.

Front

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

Back

In a closed system, the total mechanical energy (potential + kinetic) remains constant, meaning energy can transform from one form to another but is conserved.

Front

What type of energy is represented by a stretched spring?

Back

A stretched spring represents elastic potential energy.

Front

What is an example of chemical energy?

Back

Chemical energy is stored in the bonds of chemical compounds, such as in food or batteries.

Front

How do you calculate the potential energy of an object at a certain height?

Back

To calculate the potential energy, use the formula PE = mgh, substituting the mass (in kg), height (in meters), and g (approximately 9.81 m/s²).

Front

What happens to the kinetic energy of a car as it accelerates?

Back

As a car accelerates, its kinetic energy increases due to an increase in its velocity.