sliding friction - the force that resists the motion of two surfaces sliding past each other., static friction - the force that prevents an object from moving when it is at rest., surface - the outside or top layer of something, air resistance - a force that slows down objects as they move through the air., supports motion - to help or enable an object to move or keep moving, prevents motion - to stop an object from starting to move or to resist movement , rough - having an uneven surface, not smooth, rub - to press two surfaces against each other and move them backwards and forwards,

Lesson 4- FRICTION FORCE

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嵌入

排行榜

快閃記憶體卡是一個開放式範本。它不會為排行榜生成分數。

視覺風格

選項

切換範本

恢復自動保存: ?