Sunday

April 20, 2014

April 20, 2014

Posted by **Anonymous** on Thursday, January 17, 2013 at 5:59pm.

- physics -
**Anonymous**, Thursday, January 17, 2013 at 7:31pmI am assuming that the truck is traveling West the whole time.

I would start by calling the 90 km/hr section part 1 and the 110 km/hr section part 2. Then convert the 10 min into hours to make your life easier. It comes out to be 0.17 hours. (10/60=0.16666...) Next figure out the time for part two using the definition of velocity, v= d/t where v is velocity, d is displacemnet and t is time. Turns out it traveled for 0.35 hr.

Now there's probablly an easier way to do this, but this is how I know.

First figure out how far the truck went in part one by multiplying the velocity by the time. Should come out to be 15.3 km. Then do the same for part two. It should be 38.5 km.

Then use the equation Vavg=(d)/(t) where Vavg is the average velocity, d is the total distance traveled and t is the total time. Divide them and you'll have your answer.

I would NOT use the decimals I rounded to and solve it again, but this should give you an idea of how to work the problem. Hope it helps.

**Related Questions**

math - At 9:00 a.m. a truck leaves the truck yard and travels west at a rate of ...

math - 289 min = 4 hr and 49 min 213 min = 3 hr and 33 min 345 min = 5 hr and 45...

physics - On a 120km track,a train travels the first 30km at a uniform speed of ...

algebra - Truck A leaves a truck stop traveling at 80 km/hr. Four hours later, ...

physics - if a motorboat travels at 25km/hr down a river whose velocity is 4km/...

physics - Jason drives due west with a speed of 55.0km/hr for 30.0 min, then ...

physics - A truck travels up a hill with a 10 ◦ incline. The truck has a ...

Physics - A truck travels up a hill with a 10 incline. The truck has a constant...

physics - a cyclist travels at a distance of 10.0 km. in 30 min. after w/c he ...

physics - a cyclist travels at a distance of 10.0 km. in 30 min. after w/c he ...