Practice with Kinetic & Potential Energy

Front

What is kinetic energy?

Back

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

Front

What is potential energy?

Back

Potential energy is the stored energy in an object due to its position or state. It is often associated with gravitational potential energy, which can be calculated using the formula PE = mgh, where m is mass, g is the acceleration due to gravity, and h is height.

Front

At which position is kinetic energy the greatest in a roller coaster?

Back

Kinetic energy is greatest at the lowest point of the roller coaster, where the speed of the coaster is highest.

Front

How do you calculate the potential energy of an object?

Back

Potential energy can be calculated using the formula PE = mgh, where m is the mass of the object, g is the acceleration due to gravity (approximately 9.81 m/s² on Earth), and h is the height above a reference point.

Front

What type of energy does a rock at the top of a hill possess?

Back

A rock at the top of a hill possesses potential energy due to its elevated position.

Front

What is the relationship between kinetic energy and mass?

Back

Kinetic energy is directly proportional to the mass of the object; as the mass increases, the kinetic energy increases, assuming the velocity remains constant.

Front

What is the relationship between kinetic energy and velocity?

Back

Kinetic energy is proportional to the square of the velocity; if the velocity doubles, the kinetic energy increases by a factor of four, assuming mass remains constant.

Front

What is an example of kinetic energy in everyday life?

Back

An example of kinetic energy is a moving car, a running person, or a flowing river.

Front

What factors affect potential energy?

Back

Potential energy is affected by the mass of the object, the height of the object above a reference point, and the acceleration due to gravity.

Front

What is gravitational potential energy?

Back

Gravitational potential energy is the potential energy an object has due to its height above the ground, calculated using the formula PE = mgh.