Solving for Unknown Force with Two Given Forces and Constant Velocity

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To solve for the unknown force acting on a particle moving at constant velocity, it is essential to recognize that constant velocity implies zero acceleration. Consequently, the net force acting on the particle must also equal zero. Given one force, the other force must be equal in magnitude and opposite in direction to ensure the forces balance out. This understanding highlights the relationship between force, mass, and acceleration as described by Newton's second law, f=ma. The key takeaway is that the forces must cancel each other out to maintain the constant velocity of the particle.
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Homework Statement


While two forces act on it, a particle is to move at the constant velocity = (3.9 m/s) - (-3.6 m/s). One of the forces is 1 = (1.446064618687 N) + (-5.679751753869 N). What is the other force?


Homework Equations


f=ma


The Attempt at a Solution



I don't know an equation to use with velocity in it that would work for this problem. Can someone help me out?
 
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Since the particle is moving at constant velocity, there is no acceleration, therefore the net force or sum of forces = 0. The components of the other force must be equal in magitude and in the opposite directions.
 
The key point is that the velocity is constant. What does that tell you about the particle's acceleration and the net force on it?
 

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