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Question

Choose the correct statements regarding 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.


  1. All statements, except 5 
  2. All statements except 5 and 3 
  3. All statements except 1 
  4. All statements except 2 


Solution

The correct option is B All statements except 5 and 3 

Momentum = 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 p depends on velocity, p can be changed by the application of unbalanced force.
A balanced force cannot bring a change in the motion, thus balanced force cannot change momentum.

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