One horsepower (1 hp) is the unit of power based on the work that a horse can do in one second. this is defined, in english units, as a force of 550 lb that can move an object 1 foot in 1 s. in si, 1 hp equals 745.7 w, or 745.7 j of work delivered in 1 s. suppose you have a horse that delivers 745.7 w of power, but that it does the work in only 0.55 s. how much work has this horse done?

Aboat radioed a distress call to a coast guard station. at the time of the call, a vector a from the station to the boat had a magnitude of 45.0 km and was directed 15.0° east of north. a vector from the station to the point where the boat was later found is = 30.0 km, 15.0° north of east. what are the components of the vector from the point where the distress call was made to point where the boat was found? in other words, what are the components of vector c = b - a?