How to Solve Newton's Laws Problems for a Decelerating Particle?

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The discussion focuses on solving a physics problem involving a decelerating particle. The particle, initially moving at 25.0 m/s, is acted upon by a constant force of 15.0 N, bringing it to a stop over 62.5 m. The direction of the force is opposite to the particle's motion, which is essential for it to stop. Participants suggest using kinematic equations to calculate the acceleration and time required for the particle to halt. The original poster expresses gratitude for the guidance received in solving the problem.
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Homework Statement



A particle is traveling in a straight line at a constant speed of 25.0 m/s. Suddenly, a constant force of 15.0 N acts on it, bringing it to a stop in a distance of 62.5 m.
(a) What is the direction of the force?
(b) Determine the time it takes for the particle to come to a stop.
(c) What is its mass?

Homework Equations



F=ma

The Attempt at a Solution



Okay, I figured out that the direction of the constant force must be opposite of the particle, otherwise the particle will never stop. I am unable to come up with way to solve the problem so if you guys can shed light on what I can do, that will be awesome
 
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You have one of the equations; you need to use the kinematic equations of motion for constant acceleration to find the acceleration and time.
 
Okay, thanks for the direction! I got it now.
 

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