A.A child riding a bicycle down the street
a car in motion has kinetic energy because, Kinetic energy is energy due to motion.
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1. The walls of a building 2. A can of vegetables 3. Car moving 4. Parked car on a hill
Motion.
One example of a store of kinetic energy is a spinning flywheel.
Your car.
No. For example a falling stone is converting potential energy of gravitational attraction into kinetic energy, and there is no elastic energy.
From my understanding, yes. A waterfall is an example of potential gravitational energy and kinetic energy. The water is moving downstream at a fast pace (kinetic energy) and when reaching the drop off the water gains potential gravitational energy and drops towards the ground. Mechanical energy is a mix between Kinetic energy and any type of potential energy so yes, a waterfall is an example of Mechanical Energy.