The law of conservation of momentum states that the sum of momenta of two objects before collision is equal to the sum of momenta after the collision provided that ______

No internal balanced force acts on them.

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No external unbalanced force acts on them.

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No internal unbalanced force acts on them.

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No external balanced force acts on them.

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Solution

The correct option is B
No external unbalanced force acts on them.

For law of conservation of momentum, system must be isolated i.e no external unbalanced force acts on them.

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Similar questions

The linear momentum of a system of particles is the sum of linear momenta of the individual particles . Can we state a principle of conservation of linear momentum as "linear momentum of a system remains constant if no external force acts on it"???

Q. Define balanced forces and unbalanced force.
State whether balanced or unbalanced force acts on a object when it is staying rest on a table.

Q. If no external force acts on a system

If no external forces acts on a system of particles then the momentum of the system remains conserved.

Choose the correct statement:

Statement 1: Unbalanced forces can change the direction of motion.

Statement 2: A balanced force is required to accelerate the motion.

Statement 3: An object moves with a uniform velocity when balanced forces are acting on it and there is no net force acting on it.

Statement 4: Balanced force cannot start a motion.

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The law of conservation of momentum states that the sum of momenta of two objects before collision is equal to the sum of momenta after the collision provided that ______

The correct option is B No external unbalanced force acts on them. For law of conservation of momentum, system must be isolated i.e no external unbalanced force acts on them.

The correct option is B
No external unbalanced force acts on them.

For law of conservation of momentum, system must be isolated i.e no external unbalanced force acts on them.