Conservation of Momentum in Inelastic Collisions

AI Thread Summary
In inelastic collisions, momentum is conserved, meaning the total momentum before the collision equals the total momentum after the collision. The equation m_1\vec{v}_1 + m_2\vec{v}_2 = (m_1 + m_2)\vec{v}_f illustrates this principle, where m represents mass and v represents velocity. The vector nature of momentum indicates that both magnitude and direction must be considered in the calculations. Participants in the discussion referenced external resources to clarify concepts related to inelastic collisions. Understanding these principles is crucial for analyzing the behavior of colliding objects.
kevina
Messages
10
Reaction score
0
Can someone explain to me the vector nature of momentum in a case where two objects collide and stick together?
 
Physics news on Phys.org
Last edited:
Yes! I remember seeing that link once before. I was looking for it but couldn't find it. Thanks Doc Al. :)
 
The rope is tied into the person (the load of 200 pounds) and the rope goes up from the person to a fixed pulley and back down to his hands. He hauls the rope to suspend himself in the air. What is the mechanical advantage of the system? The person will indeed only have to lift half of his body weight (roughly 100 pounds) because he now lessened the load by that same amount. This APPEARS to be a 2:1 because he can hold himself with half the force, but my question is: is that mechanical...
Hello everyone, Consider the problem in which a car is told to travel at 30 km/h for L kilometers and then at 60 km/h for another L kilometers. Next, you are asked to determine the average speed. My question is: although we know that the average speed in this case is the harmonic mean of the two speeds, is it also possible to state that the average speed over this 2L-kilometer stretch can be obtained as a weighted average of the two speeds? Best regards, DaTario
Some physics textbook writer told me that Newton's first law applies only on bodies that feel no interactions at all. He said that if a body is on rest or moves in constant velocity, there is no external force acting on it. But I have heard another form of the law that says the net force acting on a body must be zero. This means there is interactions involved after all. So which one is correct?
Back
Top