Non-equilibrium applications of Newton's Laws of motion

[Mitsuki]

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?

 

[mg0stisha]

You know the mass, and can find the acceleration with the given data.

 

[Cryphonus]

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)...