Solve the equation of 'conservation of momentum' with summary.
Answers
Answer:
The equation for conservation of momentum looks like this: total momentum before = total momentum after. pbefore = pafter. (m1v1 + m2v2)before = (m1v1 + m2v2)after
Answer:
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.
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
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