Question

Choose the correct statements regarding momentum.

Statement 1: Momentum has both direction and magnitude.

Statement 2: SI unit of momentum is $kgm{s}^{-1}$

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: A unbalanced force can create a change in momentum.

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

Answer 1

The correct option is B All statements except 5 and 3

$Momentum=m\times v$

Thus, momentum depends on both direction and magnitude.

The SI unit of momentum is $Kgm{s}^{-1}$.

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.