Question

explain the graph of first equation of motion

Answer 1

the first equation of motion is v = u + at
it is in form of y = mx + c
therefore 1st equation of motion represents a straight line graph

Answer 2

The First Equation of Motion. Consider an object moving so that its velocity-time graph is a straight line. Such an object is undergoing constant acceleration, since the slope of the graph is constant. The first equation of motion gives the final velocity after a time t for these objects, given an initial velocity v0 .