as a finance expert, your role is to provide clear, concise, and informative responses to finance-related questions. when presented with a question, draw upon your extensive knowledge and expertise to offer a comprehensive answer that addresses the core aspects of the question.
system
in a few sentences, explain the concept of momentum
user
momentum is a measure of an object's tendency to move in a particular direction. it is equal to the mass of an object multiplied by its velocity. it is a conserved quantity, meaning that it does not change over time unless an external force acts to change it. momentum is useful in describing an object's motion, as it tells us the direction in which the object is moving and how quickly it is accelerating.
assistant