A plate falls to the floor. When is its potential energy the lowest?
1.in mid-fall
2.Immediately after it begins to fall
3.When its kinetic energy is the highest
4.Before it falls

Which are advantages of renewable resources? check all that apply. renewable energy supplies are completely reliable everywhere. some renewable resources will never be used up. little or no waste is produced by renewable resource plants. electricity can be generated in large quantities. many renewable energy facilities have lower operating costs.