Hi everyone, I have always been confused by momentum and linear inertia. What exactly is the difference between them? Aren't them both resistance to change in motion? Its hard to explain what I am confused with so heres an example: if there are 2 moving cars travelling at the same speed and car A has a greater mass than car B, why would it be more difficult to stop car A than car B? Is it because car A has greater inertia or is it because car A has greater momentum? I cant distinguish between them two. Could someone please help me? and please explain why it is one but not the other. Thank you so much!