what do
you mean by laws of
conservation of momentem?
Answers
Answer:
Hello mate ✌️.
Explanation:
The law of momentum conservation can be stated as follows. For a collision occurring between object 1 and object 2 in an isolated system, the total momentum of the two objects before the collision is equal to the total momentum of the two objects after the collision.
hope it will be helpful to you ✌️
Mark as brainlist answer ❣️❣️❣️
follow up me ✔️ for inbox ✌️ guys...... XD ❌
Momentum is a conserved quantity.
The total momentum of a closed system is constant. This principle is known as the law of conservation of momentum (often shortened to the conservation of momentum or momentum conservation).
When objects interact, their total momentum before the interaction is the same as after the interaction.
∑pbefore = ∑pafter
There are several conventions for writing before and after in mathematical shorthand.
∑p = ∑p′ prime for after
∑p0 = ∑p nought for before
∑q = ∑p q for before
∑pi = ∑pf initial and final
Numbered subscripts are usually used to identify individual objects.
p1 + p2 + p3 + … = p1′ + p2′ + p3′ + …
m1v1 + m2v2 + m3v3 + … = m1v1′ + m2v2′ + m3v3′ + …
The law of conservation of momentum is logically equivalent to Newton's third law of motion (the action-reaction law).
Related concepts of dynamics
I II
1st law inertia
m momentum
p = mv
2nd law force law
F = ma impulse-momentum theorem
J = ∆p
3rd law action-reaction
+F1 = −F2 conservation of momentum
∑p = ∑p0
Momentum is a vector quantity, so you need to pay attention to direction.
Momentums pointing in a convenient direction should be positive.
Momentums pointing in the opposite direction must be negative.
Momentums pointing in arbitrary directions are dealt with in another section of this book.
Recoil
Recoil occurs when one object moves abruptly backward in reaction to pushing or propelling another object forward.
The two objects are initially in contact with one another and are therefor at rest relative to one another (∑p = 0).
Momentum is conserved, so the total momentum afterwards is still zero (∑p′ = 0).
In order for the total momentum to remain zero, the momentum of one object is equal and opposite the other (+p1′ = −p2′).
Collision
Momentum is conserved for all types of collisions.
Two objects collide and separate
p1 + p2 = p1′ + p2′
m1v1 + m2v2 = m1v1′ + m2v2′
Two objects collide and stick together
p1 + p2 = p1+2′
m1v1 + m2v2 = (m1 + m2)v′