- #1

hiineko

- 63

- 1

## Homework Statement

You drive on Interstate 10 from San Antonio to Houston, half the

*time*at 58 km/h and the other half at 103 km/h. On the way back you travel half the

*distance*at 58 km/h and the other half at 103 km/h. What is your average speed

**(a)**from San Antonio to Houston,

**(b)**from Houston back to San Antonio, and

**(c)**for the entire trip?

**(d)**What is your average velocity for the entire trip?

## Homework Equations

V=d/t[/B]

## The Attempt at a Solution

with a help of a friend online but I still don't understand it.

a.) (58*t/2 + 103*t/2) / t = 58/2+103/2 = (58+103)/2 = 80.5 The problem is I don't know how did "t" gone

b.) D/(D/2/(58))+(D/2/(103)) = ??

c.) none, stuck in A and B so can't answer this

d.) I don't why "zero" is the answer here pls explain

Help pls

I kinda suck at Algebra which lead to sucking in Physics too lol

Last edited: