POTENTIAL-AND-KINETIC-ENERGY.pptx

Potential and kinetic energy

1. POTENTIAL AND KINETIC ENERGY

2. Kinetic Energy Kinetic energy is the energy of motion, observable as the movement of an object or subatomic particle. Every moving object and particle have kinetic energy. A person walking, a soaring baseball, a crumb falling from a table and a charged particle in an electric field are all examples of kinetic energy at work.

3. Formula

4. Examples 1. Calculate the Kinetic energy of a 750 kg race car travelling 55m/s down the racetrack.

5. 2. A bowling ball is rolling down a ramp at a constant velocity of 2.5m/s and has a kinetic energy equal to 18.8J. What is the mass of a bowling ball?

6. 3. A locomotive has a mass of 190,000 kg and has 2,500,000 J of Kinetic energy, calculate the velocity of the locomotive.

7. Potential Energy Potential energy is energy that is stored – or conserved - in an object or substance. This stored energy is based on the position, arrangement or state of the object or substance. You can think of it as energy that has the 'potential' to do work.

8. Formula

9. Assessment 1. what is Potential Energy? 2. what is Kinetic Energy? Problem Solving 1. Calculate the kinetic energy of 500 kg race car travelling 40m/s down the racetrack. 2. Calculate the gravitational potential energy in a 400 kg boulder that rests on a cliff 140 meters high.