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## Homework Statement

A car takes a trip at 20m/s for a certain time interval. At any point in the trip (assuming it doesn't matter), the car takes a 10 minute break with no velocity. The average velocity for the trip is 15m/s The problem asks for the Total time and the distance travelled.

## Homework Equations

x=vt

v(avg)=1/2(v+v_f)

## The Attempt at a Solution

I guess I'm just confused about the rules in using the average velocity equation. This problem should be easy it seems. I have worked it out and I don't have an answer on if what I did is right or not. This is what I did.

T(total)=t(interval)+600(seconds)

x=v*t

x=v*(T-600(seconds))

x=20T-12000(meters)

2*V(avg)=v_o+v_f

=(x_o+x_f)/T=2*X/T

v(avg)=x/T Which makes me think this wasnt even necessisary since it is a general eq.

Plugging in x into the last equation you get

v(avg)*T = 20T-12000(m)

15*T=20T-12000(m)

T=2400s

Therefore x = 36000m

If this is right I would be helpful to know. If not a hint on how to use that stupid average formula would be nice.