Average velocity ?????? You're driving an interstate 10 from Sn Antonio to Houston half the time at 55km/hr and the other half at 90km/hr . What is your average speed a) from San Antonio to Houston b) from Houston back to San Antonio c) for the entire trip ? What is your average velocity for the entire trip ? Indicate how average velocity can be found on a sketch of x versus t ? HI i'm new to the forums and this question has me all confused..... Any help is greatly appreciated. Thanks in advance.