Friday

August 1, 2014

August 1, 2014

Posted by **kelly** on Friday, April 8, 2011 at 11:04pm.

- Physics -
**Jai**, Friday, April 8, 2011 at 11:47pmrecall that speed is distance traveled per unit time, or

v = d/t

also recall that work is force exerted times distance, or

W = Fd

since in the problem we are only given the force, we calculate for the distance first.

substituting the given speed and time to formula for speed:

v = d/t

0.8 = d/(30*60)

d = 0.8*30*60 = 1440 m

note: we multiplied 30 by 60 to convert units to seconds.

substituting to get work,

W = Fd

W = 40*1440

W = 57600 J or 57.6 kJ

hope this helps~ :)

- Physics -
**nianz**, Saturday, September 1, 2012 at 4:36amthe answer should be 0J

**Related Questions**

physical science - A girl on a bicycle drags a wagon full of newspapers at .80 m...

physics - A boy pulls his little brother in a little red wagon. He keeps the ...

physics - a boy is pulling on a wagon with a force of 70 N directed at an angle ...

Physics - A 43.3 kg boy and a 60.0 kg girl are on the surface of a frozen lake, ...

Physics please help!! - A 43.3 kg boy and a 60.0 kg girl are on the surface of a...

physics - A boy pulls a wagon with a force of 20N on a handle of .50 meters long...

physics - A boy pushes a book by applying a force of 40N.Find the work done by ...

physics - A boy pushes a book by applying a force of 40N.Find the work done by ...

physics - A boy pushes a book by applying a force of 40N.Find the work done by ...

Physics - A small boy is flipping a piece of cake across the lunch room at ...