Balanced: Forces are equal and opposite, They cannot change the state of motion, They cannot change the direction of a moving body, They cannot change the speed of a moving object, They cannot cause acceleration, Unbalanced: Forces are not equal and opposite, They can change the state of motion, They can change the direction of a moving object, They can change the speed of a moving object, They can cause acceleration,

Forces - Balanced or Unbalanced

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恢復自動保存: ?