標題:
發問:
Alex is standing on the side of an east-west direction, watching a car moving at 70km h^-1 due west. Nancy, driving east at a speed of 52km h^-1 , watches the same car. Taking the easterly direction as positive, what velocity of the car will Nancy measure? thanks a lot~~
最佳解答:
The relative velocity of the car with respect to Nancy = (-70 - 52) km/h = -122 km/h i.e. 122 km/h in the west direction.
其他解答:
此文章來自奇摩知識+如有不便請留言告知
al relative velocity發問:
Alex is standing on the side of an east-west direction, watching a car moving at 70km h^-1 due west. Nancy, driving east at a speed of 52km h^-1 , watches the same car. Taking the easterly direction as positive, what velocity of the car will Nancy measure? thanks a lot~~
最佳解答:
The relative velocity of the car with respect to Nancy = (-70 - 52) km/h = -122 km/h i.e. 122 km/h in the west direction.
其他解答:
文章標籤
全站熱搜
留言列表
