Units are joules, newtons and metres. If the force is overcoming frictional forces, all or some of the work done by the force is converted to heat energy. An light aircraft of mass 1200 kg starts from ...
JONNY NELSON: Energy. There are lots of different types and lots of different ways of storing it. Chemical energy in a sparkler, elastic potential energy that fires a toy into the air, and many, many ...
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