# Non uniform circular acceleration

hav0c

## Homework Statement

A car is moving with a speed of 30m/s on a circular path of radius 500m. It's speed is increasing at a rate of 2m/s2. What is the acceleration of the car.

## Homework Equations

That is my problem.

## The Attempt at a Solution

Well i know equations for uniform circular motion but this is just beyond me.

Mentor
Hint: You are given the tangential component of the acceleration. What's the radial component?

Homework Helper
Gold Member
An object is accelerating if it's speed or direction is changing. Your car appears to be subject to two acceleration vectors. You know how to add two vectors?

Edit: Deleted a bit of this reply as otherwise too easy.

hav0c
oh
that was surprisingly easy
i was messing up with vector addition
thanks anyways.

Homework Helper
Gold Member
Just to play the devil...

What about gravity? Is it really three vectors :-)

Mentor
Just to play the devil...

What about gravity? Is it really three vectors :-)
Why do you think that would matter? (It's on a circular path.)