Non-equilibrium applications of Newton's Laws of motion

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SUMMARY

The discussion focuses on applying Newton's Laws of motion to solve a problem involving a 1380 kg car that decelerates from 27 m/s to 17 m/s over 8 seconds. Participants emphasize calculating acceleration as the first step, using the formula for net force (F = m * a) to determine the magnitude and direction of the net force responsible for the deceleration. The acceleration is derived from the change in velocity over time, confirming the necessity of a net force acting on the car.

PREREQUISITES
  • Understanding of Newton's Second Law (F = m * a)
  • Basic knowledge of kinematics, specifically acceleration
  • Ability to calculate velocity change over time
  • Familiarity with vector components in physics
NEXT STEPS
  • Calculate acceleration using the formula: a = (final velocity - initial velocity) / time
  • Apply Newton's Second Law to find the net force acting on the car
  • Explore vector components to determine the direction of the net force
  • Review real-world applications of non-equilibrium dynamics in automotive physics
USEFUL FOR

Students studying physics, particularly those focusing on mechanics and dynamics, as well as educators looking for practical examples of Newton's Laws in action.

Mitsuki
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Homework Statement


A 1380kg car is moving due east with an initial speed of 27 m/s . after 8.00s the car has slowed down to 17.0 m/s . Find the magnitude and direction of the net force that produces the deceleration


Homework Equations


Net force of x= MAx
Net force of y= MAy


The Attempt at a Solution


I am not sure how to start this question. Can anyone give me hints to start out this questions?
 
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You know the mass, and can find the acceleration with the given data.
 
Mitsuki said:

Homework Statement


A 1380kg car is moving due east with an initial speed of 27 m/s . after 8.00s the car has slowed down to 17.0 m/s . Find the magnitude and direction of the net force that produces the deceleration


Homework Equations


Net force of x= MAx
Net force of y= MAy


The Attempt at a Solution


I am not sure how to start this question. Can anyone give me hints to start out this questions?


Ok, you know the Velocity change in a certain amount of time.This is actually what we call "acceleration" and as you know if there is an acceleration then there must be a force acting in these conditions.So i advice you to calculate the acceleration then use Newton's 2nd law (F=m.a)...
 

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