A body is under uniformly accelerated linear motion if its acceleration is a constant vector. Such a body travels along a straight line with a steadily increasing or decreasing speed. When looking at a body in uniformly accelerated linear motion, you might be interested in calculating its position in time. The position x of a body describing a uniformly accelerated linear motion on the straight line it travels at a time t is given by

x(t)= x₀ + v₀ · t + ½ a · t² ,

where x₀ is its position at the moment we start measuring time, v₀ is its velocity at that same moment, and a its acceleration. Another parameter of the motion of a body in uniformly accelerated linear motion you might be interested in is its velocity. The velocity of a body under uniform acceleration is likewise given by

v(t)= v₀ + a · t.