Momentum is a concept in physics that describes the motion of an object. It is calculated by multiplying an object's mass by its velocity. This means that heavier objects or those moving faster have more momentum. For example, a train moving quickly has much more momentum than a bicycle moving at the same speed, simply because the train is much heavier. In everyday life, we can see momentum at work in sports. When a football player runs with the ball, they build momentum, making it harder for opponents to stop them. Similarly, a bowler in cricket gains momentum as they approach the wicket, allowing them to deliver the ball with greater speed and force.