How Does Impulse Affect Particle Velocity?

[DollarBill]

Homework Statement

http://img401.imageshack.us/img401/46/impulsemw6.jpg

Before the force is applied (t<0), the particle moves along the x-axis with a velocity of -6.3 m/s.

Find the velocity of the particle after the force stops acting on it.

The particle has a mass of 5.2 kg

Homework Equations

j=$$\Delta$$p
$$\Delta$$p=0

The Attempt at a Solution

j=42Ns

j=$$\Delta$$p
42=mv_F-mv₀
42=(5.2)v_F-5.2(-6.3)
9.24=5.2(v)_F
v_F=1.777 m/s

 

[LowlyPion]

Your method looks good.