Lets take an example of someone travelling 10m/s^2 the person is travelling for 3seconds how far did he travel. Easy 10*3^2*0.5 = 45. Now with units it would look something like this 10m/s^2 * 3s^2 * 0.5 The 3s^2 makes the s^2 part irrevelant for 10m/s^2 thus becomes 90m. But why is it halved? All I know is that "it is the area under the the graph" so that doesn't proove enough. Why is it "the area under the graph"? Thanks in advance!