A 5kg mass has a force applied that changes its velocity from 8m/s to 2m/s in the same direction what is the change in momentum

Answer: - 30kgm/s

Explanation:

Mass M = 5kg

initial velocity V1 = 8m/s

Final velocity V2 = 2m/s

Change in momentum = ?

Recall that momentum is the product of mass of an object and the velocity by which it moves.

i. e Momentum = Mass x Change in velocity

Momentum = M x (V2 - V1)

= 5kg x (2m/s - 8m/s)

= 5kg x (-6m/s)

= - 30kgm/s (The negative momentum mean the mass is travelling in a negative direction)

Thus, the change in momentum is - 30kgm/s