A Nonrewnewable source is hard to get back from its source, while a renewable source is easy to get back from its source.
Example:
Nonrenewable: crude oil, oil, coal, fossil fuels, etc.
Renewable: sunlight, wind, biomass, rain, tides, waves and geothermal heat, etc.
50 you always use the the top number for protons
Potential energy is turned in to kinetic and kinetic I believe is being used in motion. potential means stored kentic means energy of movement.
Answer:
the anwser is; B: increasing its speed