4. Ball dropped from a height

 

 

A ball held at a height possesses chemical energykinetic energygravitational potential energylight energy because of its position above the ground. When the ball is dropped, gravitational potential energy is converted into kinetic energyelectrical energy is converted into sound energykinetic energy is converted into potential energyheat energy is converted into light energy as it falls. During the fall, the kinetic energy decreasespotential energy decreaseselectrical energy remains constantpotential energy increases, while the potential energy increasesheat energy disappearskinetic energy increaseskinetic energy decreases, causing the ball to move faster. When the ball strikes the ground, a all kinetic energy changes into electrical energysmall amount of kinetic energy is transformed into heat and sound energykinetic energy changes into chemical energypotential energy changes into light energy due to the impact.