Work and 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

How do you calculate Kinetic Energy for a moving car?

Back

To calculate the Kinetic Energy of a car, use the formula KE = 1/2 mv². For a car weighing 800 kg traveling at 35 m/s, KE = 1/2 * 800 * (35)² = 490,000 J.

Front

What type of energy does a stretched coiled spring have?

Back

A stretched coiled spring has Elastic Potential Energy, which is the energy stored in the spring when it is stretched or compressed.

Front

What are the two primary forms of energy?

Back

The two primary forms of energy are Potential Energy and Kinetic Energy.

Front

What is Work in terms of energy?

Back

Work is the transfer of energy through motion. It occurs when a force is applied to an object, causing it to move.

Front

What is Gravitational Potential Energy?

Back

Gravitational Potential Energy is the energy stored in an object due to its height above the ground. It depends on the object's weight and height.

Front

What is the formula for Gravitational Potential Energy?

Back

The formula for Gravitational Potential Energy is PE = mgh, where m is mass, g is the acceleration due to gravity, and h is height.

Front

What is the difference between Potential Energy and Kinetic Energy?

Back

Potential Energy is stored energy based on an object's position, while Kinetic Energy is the energy of an object in motion.

Front

What is an example of Kinetic Energy in everyday life?

Back

An example of Kinetic Energy is a moving bicycle. The faster it moves, the more Kinetic Energy it has.

Front

What happens to the Kinetic Energy of an object if its speed 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.