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The idea is to use conservation of momentum. The momentum before the shot is fired is assumed to be zero, so write an equation that states that the momentum after the shot is zero, and solve it. The total momentum, of course, is the sum of the momentum of the two parts; for each part, the momentum is mass x velocity.
Usually you would use some fact you know about the physical system, and then write an equation that states that the total angular momentum "before" = the total angular momentum "after" some event.
For example, you can write this as:Total change in momentum = 0 In the case of a collision, you can use: M1 = M2 where M1 is the total momentum before the collision, and M2 is the total momentum after the collision.
While energy is ALWAYS conserved, this isn't always useful for calculations, since MECHANICAL ENERGY - the energy that can be easily calculated - is NOT always conserved. On the other hand, momentum is always conserved, whether a collision is elastic or inelastic. (In an elastic collision, energy is also conserved.) Thus, conservation of momentum is often more useful for calculations involving collisions.
The idea is to use conservation of momentum. Calculate the total momentum before the collission, add it up, then calculate the combined velocity after the collision, based on the momentum.
The law of conservation of momentum useful in analyzing the collision between two bodies because there is use to be the collision between the two bodies reason for that is law of conservation of momentum is that the total sum of momentum is equal means constant after the total sum of momentum of two bodies. so if you don't be the collision between two bodies you will not aware of the meaning of momentum.
Efforts at conservation have prevented the extinction of several animal species. The random motion of objects is limited by the conservation of momentum.
The idea is to use conservation of momentum. The momentum before the shot is fired is assumed to be zero, so write an equation that states that the momentum after the shot is zero, and solve it. The total momentum, of course, is the sum of the momentum of the two parts; for each part, the momentum is mass x velocity.
Usually you would use some fact you know about the physical system, and then write an equation that states that the total angular momentum "before" = the total angular momentum "after" some event.
i think no. b/c for elastic or inelastic collision we do have momentum of the bodies initially. so motor driven car couldnot use to prove this law. As we know that momentum can be measured in the absence of force. yes we use force when momentum is changing, this is actually impulse.
For example, you can write this as:Total change in momentum = 0 In the case of a collision, you can use: M1 = M2 where M1 is the total momentum before the collision, and M2 is the total momentum after the collision.
While energy is ALWAYS conserved, this isn't always useful for calculations, since MECHANICAL ENERGY - the energy that can be easily calculated - is NOT always conserved. On the other hand, momentum is always conserved, whether a collision is elastic or inelastic. (In an elastic collision, energy is also conserved.) Thus, conservation of momentum is often more useful for calculations involving collisions.
The idea is to use conservation of momentum. Calculate the total momentum before the collission, add it up, then calculate the combined velocity after the collision, based on the momentum.
You can use conservation of momentum to solve this. Just multiply momentum (= mass x speed) for the bullet, and assume that the change in (mass x speed) for the gun must be the same.
If the two bodies form a closed and isolated system (that is no other external forces act on the system apart from the forces that the bodies exert on each other and no mass is allowed to enter or leave the system), the principle of conservation of momentum SHOULD be used. Remember: As long as the condition in the brackets above hold, the principle of conservation of momentum holds. Next, depending on the nature of the collision, another conservation law can be used. If the collision is perfectly elastic, then kinetic energy is conserved. Note that although kinetic energy is not always conserved, TOTAL energy is ALWAYS conserved. You could still apply the principle of conservation of energy for an inelastic collision provided you knew the amount of energy converted to other forms of energy.
the crazy old lady was ballistic when she realized her precious kittens had been stolen from her.
Use this formula:Final momentum = (initial momentum) + (change in momentum)