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Forces and Energy
Review of forces and energy
Question | Answer |
---|---|
SI unit for force | Newtons |
Force = mass times acceleration | 2nd law of motion |
"for every force there is an equal and opposite force" | 3rd law of motion |
"an object in motion will stay in motion until acted on by a net force" | 1st law of motion |
He wrote the laws of motion | Newton |
diagram of ALL the forces acting on an object | Free body diagram |
SI unit for energy | Joules |
anything that can cause object to accelerate | force |
the ability to do work (is needed to do work) | energy |
force that must touch object it acts on | contact |
force that does NOT touch object (acts from a distance) | field |
energy based on postion (height) | potential [PE] |
energy based on motion (velocity) | kinetic [KE] |