ارجو الدخول ضرورى امتحانى بكرا :(
 

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بالنسبة للسؤال الأول :
VF 2 = 36+5d Vf2- 36 = 5d
ومن القانون Vf2 – Vi2 = 2ad
Vi= 6 m/s ، 2a=5 ، a=5/2