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**EDIT: Tangential acceleration**

## Homework Statement

If a car drives around a race track constructed such that two arcs of radius

*A*=80m and Radius

*B*=40m are joined by two stretches of straight track at a constant speed of 50 m/s, what is the ratio of the tangential accelerations A to B....Meaning asking for the ratio of the Tangential Acceleration around arc of radius A (80m) to that of the Tangential Acceleration around arc of radius B (40m). Also it is multiple choice. a.)1/2...b.)1/4...c.)2...d.)4......or e.)both equal 0.

## Homework Equations

## The Attempt at a Solution

I know this is much easier than I am making it. I know that A_t=r*alpha....but I do not have alpha and I am a little confused to how to calculate it? Just a hint to get me going?

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