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balance and forces
science
Question | Answer |
---|---|
work | use of force to move an object through a distance |
machine | a thing that makes work seem easier by changing the size or direction of a force |
power | amount of work done for eah unit of time |
force | push or pull that causes an object to move,stop,or change direction |
gravitation | force that pulls all objects toward each other |
friction | force that opposes motion when two surfaces rub against each other |
magnetism | force of pulling between magnets and magnetic objects |
balanced forces | forces equal in size and opposite in direction |
unbalanced forces | opposing forces of wich one force is greater than the other |
net force | value of combined forces on an object |