國中理化-等速率運動 - 運動
By Vanessa
at 2009-11-03T00:00
at 2009-11-03T00:00
Table of Contents
一人造衛星繞地球作等速率運動,下列何者正確?A衛星所受的合力為零,所以速率維持不變B衛星受來自地球的吸引力,此力用於改變為星的運動方向C衛星的加速度為零D衛星所受的向心力作正功,以維持衛星動能不變
Tags:
運動
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By Edwina
at 2009-11-05T15:51
at 2009-11-05T15:51
By Isabella
at 2009-11-05T06:30
at 2009-11-05T06:30
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