What is the result of an object experiencing acceleration?

An object experiencing acceleration is defined as one that changes its velocity over time. Acceleration can occur in several ways: increasing speed, decreasing speed (deceleration), or changing direction while maintaining a speed. Therefore, the key aspect of acceleration is that it directly impacts the object's velocity, which encompasses both speed and direction.

While an object may maintain its mass and potentially only change its direction (as suggested in some other choices), the fundamental understanding of acceleration is that it fundamentally alters the velocity. For example, a car speeding up from a stop sign or a football being thrown both demonstrate acceleration as they change their velocities. Thus, the correct answer emphasizes the dynamic nature of acceleration and its effect on an object's velocity.