جزاك الله خير أخي جمال لكن لم تخبرني مالمقصود بــ 
By contrast , some physical quantities , such as temperature and time, have no 
direction and are represented by ordinary numbers or scalars 
Motion in a plan is equivalent to a pair of one- dimensional motion 
ومالفرق بين ordinary numbers وَ scalars ؟؟ >> الدكتور سأل هذا السؤال ..
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