ساينس الصف الثالث الاعدادي – الفصل الدراسي الاول ساينس تالتة اعدادي – ترم اول In This part we will study : The motion It is the change of object’s location as time passes according to the location of another object. The two factors necessary for the description of motion 1- The distance that covered by the motion 2- The time taken by the moving body to cover this distance Speed It is a physical quantity which is used to describe and measure the motion of object Speed It is the distance moved through a unit time. The measuring unit of Speed = m/s = km/h. Give Reason for … 1. The object’s speed increases as time decreases to cover the same distance Because V=d/t so the speed of object is inversely proportional with time 2. G.R. the object’s speed increases by increasing the covered distance at constant time Because V=d/t so the speed of object is directly proportional with covered distance 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