Solving for Velocity of Particle in 2D Plane

[PeterFer]

Homework Statement

Two forces, vector F 1 = (3 i - 2 j) N and vector F 2 = (4 i - 7 j) N, act on a particle of mass 1.70 kg that is initially at rest at coordinates (-1.70 m, +4.25 m).

i know that the components of the velocity at 9.4 seconds are (38.7i - 49.7647j)m/s
i also know that the direction the particle is moving at 9.4 seconds is 307.87 degrees

Homework Equations

The Attempt at a Solution

some how everything I do brings me to (363.78i - 467.788j)m which is wrong

 

[tiny-tim]

Welcome to PF!

Hi PeterFer! Welcome to PF!

You don't need, and shouldn't use, the final velocity …

(it's misled you into using s = vt)

just use one of the standard constant acceleration equations

(and don't forget to add on the initial position).

 

[PeterFer]

ah yea thank you, i ended up realizing that myself but thank you anyway