alright so heres a pretty straight forward question asking to find the avg acceleration:(adsbygoogle = window.adsbygoogle || []).push({});

A car with a velocity of 25m/s [E] changes its velocity to 25 m/s in 15s. Calculate

avg acceleration.

So i drew out the vector diagram, found the resultant velocity and solved for the avg acceleration. My answer was right but the direction was wrong. My answer was 2.4 m/s^2 [45 degrees south of east ]

however, the books answer is 2.4 m/s^2 [45 degrees S of W] Can anyone explain to me

why it is south of WEST and not East?

**Physics Forums | Science Articles, Homework Help, Discussion**

Dismiss Notice

Join Physics Forums Today!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# Kinematics question concerning the direction of avg acceleration

**Physics Forums | Science Articles, Homework Help, Discussion**