Why does a displacement verse time graph make a curved line?

Question

I think it has something to do with acceleration but I am not at all sure.

Answer 1

You are right sir. It is due to acceleration.

Answer 2

You're a bit right about the acceleration. The line will only be curved if there is an element of acceleration. If there's no acceleration the line will be straight.

Answer 3

yes it does.

if an object is moving away from another at constant speed then, if they start out at time 0 at the same location, the displacement "s" of the moving object will be given by:

s = v*t where v is it's speed and t is the time

If the one object is accelerating away from the other at a constant rate then it's displacement will be given by:

s = (1/2)a*t^2 where a is the acceleration