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 positionxof a body describing a uniformly accelerated linear motion on the straight line it travels at a timetis given by

x(t) =x₀+v₀·t +½a· t²,

wherex₀is its position at the moment we start measuring time,v₀is its velocity at that same moment, andaits 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。