What is the magnitude of the average velocity v of the car?

[Lesliedenise57]

Homework Statement

A car is traveling a road that makes quarter of a circle with a constant speed s. What is the magnitude of the average velocity v of the car?

Homework Equations

The Attempt at a Solution

this is what I have down but I am not sure if I am right
*constant speed formula
s=delta x/delta t
delta x=s(delta t)

*magnitude formula
|v|=squareroot x^2 + y^2

*average velocity
V=delta x/delta t
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Problem:
V=delta x/ delta t
V=s(delta t) / delta t

 

[mfb]

You are mixing different lengths here, the x (and y) for the difference in position and the motion along the circle. And you use the same variables for the magnitude of v which makes things even more confusing.

It is convenient to introduce the radius r of the circle. What is the path traveled by the car? At speed s, how long will it take?
How far away from its original position is it afterwards?

 

[Suraj M]

I hope you mean displacement when you say ##x## you can find the arc length as you know the speed of the car as ##s## and you now the angle covered 90degrees so from that you can find the displacement of the car, and then enough can do the rest.