Calculate displacement [Two Dimensional Kinematics]

[HanSomPa]

Homework Statement

A skidding car starts moving with a velocity of 6.75m/s at an angle of 58.82657 degrees north of east. Its velocity just before it comes out of its skid 4 seconds later is 3.25 m/s at an angle of 49.6091 degrees south of east. It travels with a constant acceleration while it is in the skid. What was the car's displacement

Homework Equations

None really imo.

The Attempt at a Solution

I took apart both vectors and figured out the components.

After that I inserted the variables into x-xi=1/2(v+vi)t

After I got the answer for both the x and y values. I put the answers from polar form into cartesian form. My final answer is 14.73222776m. Did I get this right? Because honestly, I think I'm approaching this problem in a wrong way.

 

[462chevelle]

without working through the problem I can say that I don't think it should have that many sig figs in it.