How Does a Force Affect the Final Velocity and Momentum of a Moving Body?

[Jtappan]

Homework Statement

A 4 kg body is initially moving northward at 15 m/s. Then a force of 10 N, toward the east, acts on it for a time of 1.9 s.

(a) At the end of that time, what is the body's final velocity? Magnitude ____ m/s
Direction _____ ° north of east

(b) What is the change in momentum during that time?
19.2 5kg·m/s toward the east toward the west

Homework Equations

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The Attempt at a Solution

I got he change in momentum during the time but i don't know how to find the magnitude and direction of the force...

 

[Doc Al]

I got he change in momentum during the time but i don't know how to find the magnitude and direction of the force...

You are given the force and the time. Realize that impulse is a vector quantity.