Uniformly accelerating motion refers to a state of motion that accelerates at a constant rate in a single direction. Gravity is an example of uniform acceleration; an object in free fall accelerates at a constant 9.8 meters per second per second towards the center of the gravitational field.
Uniform acceleration can only occur when a constant force is applied sufficiently to perform work on an object. In real-world scenarios, many factors affect the state of motion of an object. These factors may include friction and air resistance, which sap energy and in turn act as a force in opposition to acceleration.