Please I need help with my Physics Lab analysis question. I need a full explanti
ID: 1501984 • Letter: P
Question
Please I need help with my Physics Lab analysis question. I need a full explantion of every answer because this is a lab report.
Subject is Momentum and Collision.
Q.1:What happens to the objects, the momentum and the mechanical energy in an elastic collision? What happens to the objects, the momentum and the mechanical energy in a completely inelastic collision?
Q.2:In each trial, what happens to the momentum (compare before and after)? Does each of your results confirm the Law of Conservation of Momentum? Explain how you arrived at your conclusions. Discuss one significant source of error in the experiment.
M1 and M2 is the mass of the cart. in trial 2-3 we added wheight to the cart.
Vi is the initial velocity.
Vf is the final velocity.
P is the momentum 1 before 2 after collison.
ke is kinetic energy.
Q.3:In completely inelastic collisions, kinetic energy is not conserved; instead some of that energy will be converted to non-mechanical energy. In last week’s lab, a very small amount of kinetic energy was lost to work done by friction; in today’s lab the contribution of friction with the track is negligible. What are the two significant types of non-mechanical energy that the kinetic energy is converted into in today’s experiment (remember that this is energy lost during the very brief collision, not as the cart moves down the track).
Explanation / Answer
Solution:
A perfectly elastic collision is one in which th emomentum of the system before collision is equal to the momentum after collision.
A perfectly elastic collision has its kinetic energy also conserved; so kinetic energy before collision is equal to the kinetic energy after the collision.
In a perfectly Inelastic collision, th eobjects move together after the collision. And momentum is conserved.
The momentum of the system before collision is equal to the momentum after the collision in an Inelastic collision also.
The kinetic energy is NOT conserved in an Inelastic collsiion .
2) As seen from the data the momentum is Conserved , so the collisionis elastic in nature . One significant source of error is air resistance.
Momentum is perfectly conserved only when No external forces are present .
3) Loss of kinetic energy is because energy is converted to other forms like heat and sound, during the collision.
These are the two other forms of non mechanical energy types in this experiment .