標題:
有關物理力學的問題(s-t graph)
An athlete is able to accelerate uniformly from rest to a speed of 10m/s in 2.5s. He then keeps his speed constant to finish a 100 m race . Draw a speed-time graph for the athlete and find the time at which he finishes the race. 講出x,y軸的數據、應該怎畫及解釋問題。
最佳解答:
y軸係speed(單位: m/s) x軸係time(單位: s) 所以你係y軸畫到10 跟住係x軸畫2.5 跟住就畫到1點: (2.5, 10) 張呢1點連去(0,0)個度 因為係由0開始(from rest) 條問題係問, 有個人由停開始跑, 佢係2.5s 個時 speed係 10m/s 一直個speed都係constant, 最後佢完成左個比賽
其他解答:
有關物理力學的問題(s-t graph)
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發問:An athlete is able to accelerate uniformly from rest to a speed of 10m/s in 2.5s. He then keeps his speed constant to finish a 100 m race . Draw a speed-time graph for the athlete and find the time at which he finishes the race. 講出x,y軸的數據、應該怎畫及解釋問題。
最佳解答:
y軸係speed(單位: m/s) x軸係time(單位: s) 所以你係y軸畫到10 跟住係x軸畫2.5 跟住就畫到1點: (2.5, 10) 張呢1點連去(0,0)個度 因為係由0開始(from rest) 條問題係問, 有個人由停開始跑, 佢係2.5s 個時 speed係 10m/s 一直個speed都係constant, 最後佢完成左個比賽
其他解答:
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