Correct option is B
The correct answer is: (b) kgms⁻¹
Momentum is the product of the mass of an object and its velocity. Mathematically, it is expressed as:
Momentum (p)=Mass (m)×Velocity (v)
In SI units:
Mass (m) is measured in kilograms (kg).
Velocity (v) is measured in meters per second (ms⁻¹).
Therefore, the SI unit of momentum is kgms⁻¹.
Importance of Momentum in Physics:
Momentum is a vector quantity, meaning it has both magnitude and direction.
It is conserved in isolated systems, a principle known as the Law of Conservation of Momentum.
Applications of Momentum:
Used to analyze collisions in mechanics.
Critical in understanding motion in sports, vehicles, and space exploration.
Additional Information:
kg: This is the unit of mass.
kgms: Incorrect because the unit of velocity includes s−1s⁻¹s−1 (time in the denominator).
kgms⁻²: This is the unit of force.
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