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

AI Thread Summary
A 4 kg body moving north at 15 m/s experiences a 10 N force directed east for 1.9 seconds. The final velocity of the body must be calculated by considering the impulse applied, which is a vector quantity. The change in momentum during this time is determined to be 19.25 kg·m/s toward the east. To find the final velocity's magnitude and direction, the effects of both the initial northward velocity and the eastward force must be combined. Understanding the vector nature of impulse is crucial for solving this problem.
Jtappan
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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



??

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...
 
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Jtappan said:
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.
 

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