Law of Conservation of Energy Calculations Flashcard

Front

What is the formula for calculating kinetic energy?

Back

KE = 0.5 * m * v^2

Front

What is kinetic energy?

Back

The energy that an object possesses due to its motion, calculated as KE = 0.5 * m * v^2.

Front

What is potential energy?

Back

The energy stored in an object due to its position or height, calculated as PE = m * g * h.

Front

What is the law of conservation of energy?

Back

Energy cannot be created or destroyed, only transformed from one form to another.

Front

How do you calculate the potential energy of an object?

Back

PE = m * g * h, where m is mass, g is acceleration due to gravity, and h is height.

Front

What is the value of acceleration due to gravity (g) on Earth?

Back

Approximately 9.81 m/s^2.

Front

If a car has a mass of 1500 kg and is traveling at 20 m/s, what is its kinetic energy?

Back

300000 J.

Front

If an object has a kinetic energy of 200 J and a mass of 50 kg, what is its velocity?

Back

2.8 m/s.

Front

What happens to total mechanical energy in a closed system with only conservative forces?

Back

Total mechanical energy remains constant.

Front

What is the relationship between mass, velocity, and kinetic energy?

Back

Kinetic energy increases with the square of the velocity and is directly proportional to mass.