Understanding Momentum

Momentum is a measure of an object's mass in motion. It's calculated using the following formula:

* Momentum (p) = mass (m) × velocity (v)

Applying the Formula

* Mass (m): 80 kg

* Velocity (v): 4 m/s (southward)

Calculation:

* Momentum (p) = 80 kg × 4 m/s

* Momentum (p) = 320 kg⋅m/s

Answer: The momentum of the person is 320 kg⋅m/s southward.

Important Note: Since momentum is a vector quantity, we need to include the direction (southward).