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**[SOLVED] acceleration and velocity**

1. Homework Statement

EXACT PROBLEM:

A car accelerates from rest W at 5.0m/s2 for 10.0s, then continues this acceleration NE for another 10.0s. What is the average velocity of the car for its journey to its position after 20.0s?

2. Homework Equations

average velocity=average displacement/time

Delta x=Vit + 1/2at^2

Vf=Vi+at

3. The Attempt at a Solution

First, I found Delta x and Vf for the west vector than found Delta x for the NE vector. Then I tried to find the displacement using Pythagoreans theorem but it was not the correct answer.

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