What physical quantities are conserved in this collision?

Question

To understand the vector nature of momentum in the case in which two objects collide and stick together.

In this problem we will consider a collision of two moving objects such that after the collision, the objects stick together and travel off as a single unit. The collision is therefore completely inelastic.

You have probably learned that "momentum is conserved" in an inelastic collision. But how does this fact help you to solve collision problems? The following questions should help you to clarify the meaning and implications of the statement "momentum is conserved."


A) What physical quantities are conserved in this collision?
B)Two cars of equal mass collide inelastically and stick together after the collision. Before the collision, their speeds are and . What is the speed of the two-car system after the collision?

Answer 1

A. The total mass and total velocity of the system is conserved.



B. Assuming that no energy is lost to heat, friction, noise, etc. The velocity will be half the original value of the two cars.

Answer 2

the physical quantities conserved in the collision are

ANSWER: the net momentum (considered as a vector) only.



Two cars of equal mass collide inelastically and stick together after the collision. Before the collision, their speeds are v1 and v2. What is the speed of the two-car system after the collision?

ANSWER:

The answer depends on the directions in which the cars were moving before the collision.



Two cars collide inelastically and stick together after the collision. Before the collision, the magnitudes of their momenta are p1 and p2. After the collision, what is the magnitude of their combined momentum?



ANSWER:



The answer depends on the directions in which the cars were moving before the collision.





Two cars collide inelastically and stick together after the collision. Before the collision, their momenta are p⃗ 1 and p⃗ 2. After the collision, their combined momentum is p⃗ . Of what can one be certain?



ANSWER:

ANSWER: p---> =p1→+p2→

Answer 3

Bumping off of @Africa♥ (thank you by the way)



Part E

Two cars collide inelastically and stick together after the collision. Before the collision, the magnitudes of their momenta are p1 and p2. After the collision, the magnitude of their combined momentum is p. Of what can one be certain?



ANSWER: p1+p2≥p≥|p1−p2|

Answer 4

Conservation of momentum in oblique collisions is incredibly different from what we do in ordinary one axis collision. in this you may first evaluate your axis of reference and then be sure the speed elements alongside those axis and then prepare the standard regulations of conservation of momentum alongside both 'x' and 'y' axis and proceed many times. the speed you get for the a lot will be their ingredient speed alongside axis, so that you opt for to calculate the ensuing speed and the attitude.

Answer 5

Mass, energy and momentum are conserved.