Beginner PHYSIC problem HELP nneded

[FahimP]

Homework Statement

Two train cars are on a straight, horizontal track. One car starts at rest and is put in motion with a constant acceleration of 2.4 m/s2. This car moves toward a second car that is 29 m away and moving at a constant speed of 4.0 m/s.

a.) where will they collide
b.) how long will it take to collide

Homework Equations

The Attempt at a Solution

My original plan to solve this problem was to set up two separate Kinematics equaitons .
I also put a negative sign infront of - 4.0m/s. My answer came out like 8.743 s .

ANY HELP OR ANY ADVICE WOULD BE GREAT

 

[Redbelly98]

Welcome to Physics Forums.

Yes, the kinematics equations are the way to solve this. Can you show your work? We can't really tell if your answer is right or not unless you show how you got it.