When ____ are equal in size and opposite in direction they are called ____ forces. An object with ____ acting on it will not change its motion.​ When forces are not ____ in size or not in opposite ____ they are called ____ forces. An object with ____ acting on it will ____ in the direction of the ____ force.

Balanced and Unbalanced Forces

排行榜

視覺風格

選項

切換範本

恢復自動保存: ?