Kinetic energy is the energy an object possesses due to its motion. It is a scalar quantity and depends on the mass and velocity of an object. The formula to calculate kinetic energy is:

center;">KE = 0.5 * m * v^{2}

Where:

- KE = Kinetic Energy (in joules)
- m = Mass of the object (in kilograms)
- v = Velocity of the object (in meters per second)

1. Mass: The kinetic energy of an object is directly proportional to its mass. A heavier object with the same velocity will have more kinetic energy compared to a lighter object.

2. Velocity: The kinetic energy of an object is directly proportional to the square of its velocity. This means that doubling the velocity will increase the kinetic energy by a factor of four.

The SI unit of kinetic energy is the joule (J). However, it can also be expressed in terms of electronvolts (eV) in the context of atomic and subatomic particles.

Calculate the kinetic energy of a car with a mass of 1500 kg moving at a velocity of 20 m/s.

KE = 0.5 * 1500 kg * (20 m/s)^{2}

KE = 0.5 * 1500 * 400

KE = 300,000 joules

Kinetic energy is observed in various real-world scenarios, such as:

Kinetic energy is a fundamental concept in physics and has widespread applications in our daily lives. Understanding the factors affecting kinetic energy and how to calculate it is crucial for various scientific and engineering endeavors.

.Worksheet/Answer key

Matter and Energy Worksheet/Answer key

Matter and Energy Worksheet/Answer key

Matter and Energy

PHYSICAL SCIENCE (NGSS)

Matter and Its Interactions

Students who demonstrate understanding can:

Develop a model to illustrate that the release or absorption of energy from a chemical reaction system depends upon the changes in total bond energy.

Energy

Students who demonstrate understanding can:

Develop and use models to illustrate that energy at the macroscopic scale can be accounted for as either motions of particles or energy stored in fields.