The diagram below shows the heating of an unknown substance (it is not water). Its melting point is? Where is the diagram
Answer: The observation that all objects that have mass attract each other
You should write ' 4 ' in the first box,
and ' m/s² ' in the second box.
The velocity will remain unchanged (Newton’s 1st Law) unless a force acts on it. If no friction force, then the velocity remains constant.