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Question

Choose the correct statements regarding the momentum:

Statement 1: Momentum has both direction and magnitude

Statement 2: SI unit of momentum is kg m s-1

Statement 3: A balanced force can create a change in velocity

Statement 4: An unbalanced force can create a change in velocity

Statement 5: A balanced force can create a change in momentum

Statement 6: An unbalanced force can create a change in momentum.


A
All statements, except 5
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B
All statements, except 5 and 3
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C
All statements, except 1
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D
All statements, except 2
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Solution

The correct option is B All statements, except 5 and 3

Momentum, p = m × v;

The momentum depends on both direction and magnitude.

The SI unit of p is kg m s-1.
Since an unbalanced force can bring a change in motion i.e. velocity. And since p depends on velocity, p can be changed by the application of unbalanced force.

Balanced forces cannot bring a change in the motion, thus balanced forces cannot change momentum.


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