Kinetic and Potential Energy

Front

What is kinetic energy?

Back

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

Front

What factors affect kinetic energy?

Back

Kinetic energy is affected by the mass of the object and its velocity. Increasing either mass or velocity increases kinetic energy.

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, calculated as PE = mgh, where m is mass, g is the acceleration due to gravity, and h is height.

Front

How does height affect potential energy?

Back

The higher an object is positioned, the more potential energy it has. This is because potential energy is directly proportional to height.

Front

What is the relationship between mass and potential energy?

Back

Potential energy increases with an increase in mass. More massive objects have more potential energy at the same height.

Front

What is the formula for calculating kinetic energy?

Back

The formula for calculating kinetic energy is KE = 1/2 mv².

Front

What is the formula for calculating potential energy?

Back

The formula for calculating gravitational potential energy is PE = mgh.

Front

If an object is at rest, what is its kinetic energy?

Back

If an object is at rest, its kinetic energy is 0 J, since velocity (v) is 0.

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 velocity.

Front

What is the potential energy of a 10 kg object at a height of 5 meters?

Back

PE = mgh = 10 kg * 9.8 m/s² * 5 m = 490 J.