Atrain approaching a crossing changes speed from 10 m/s to 25 m/s in 240 s. how can the train’s acceleration be described? a. the train’s acceleration is positive. b. the train is not accelerating. c. the train’s acceleration is negative. d. the train will come to rest in 6 minutes.

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?