A train moving at a constant speed of 100km/h travels east for 40min, then 30o east of north for 20 min, and finally west for 30min. What is the train's average velocity for the trip?
The answer is 30 km/h (E 40 N) but I keep getting 66.6 km/h (E 30 N) help please!
1 answer
Draw the picture. Remember the east and west are opposite directions. Those two work out to 17km east. Put the other one into it's components and you wind up with a total displacement of 44km. In 1.5 hrs, that's 30kph
2 answers