Distance: Scalar Quantity, Quantity describing how far an object travels, Speed x Time, Displacement: Vector Quantity, Shortest distance between the object's starting position and it's final position., Speed: How fast something is moving., metres per second (m/s), Distance / Time, Time: Seconds, Distance/ Speed, Acceleration: change in an object's velocity over time.,

排行榜

視覺風格

選項

切換範本

恢復自動保存: ?