Calculating Revolutions with Changing Acceleration on a Curve

[mashawa]

arr, i am so confused, is that tangential accelaration?

Homework Statement

A car starts from rest on a curve with a radius of 110 m and accelerates at 1.20 m/s^2. How many revolutions will the car have gone through when the magnitude of its total acceleration is 2.20 m/s^2?

Homework Equations

theta (final)=theta (initial)+omega*(delta)t+(a*(delta)t^2)/2*r

The Attempt at a Solution

i just have no idea how to figure out the time or the distance (or the angle) it takes the car to get from one acceleration to another...

 

[mashawa]

never mind, realized something and somehow solved it...

 

[feedmeister]

I am having trouble with a similar problem like this. Any help? I've been using the formulas but I keep getting weird numbers

Thanks

 

[bob1182006]

feedmeister can you make a new thread please? that way people will know it's your problem since mashawa doesn't need help here anymore.