ساينس الصف الثالث الاعدادي – الفصل الدراسي الاول ساينس تالتة اعدادي – ترم اول In This part we will study : Acceleration It is the change of an object speed in one second in a specific direction . Or It is the rate of change of speed . Acceleration= (Speed unit)/(Time unit)= (Metre/Second)/Second=〖m/s〗^2 Acceleration increases if the object’s speed increases by time. Its final speed is greater than its initial speed Acceleration decreases if the object’s speed decreases by time. Its initial speed is greater than its final speed لمتابعة مستر احمد الباشا وكل ما يخص الساينس : جروب الفيس بوك http://bit.ly/2Of1mcN صفحة الفيس بوك http://bit.ly/2Gq5xMo بالتوفيق مستر احمد الباشا