posted by amanda .
Samuel travels to the east at 15m/hr for 20 minutes. Then hevtravels 30 degrees north of east 2m/s for 15 minutes. What is his displacement?
Draw the triangle. Distance= sqrt(N^2+E^2)
for the component distances, distance=rate*time in one, you have to conver 20 min to hr, in the the other, convert minutes to seconds.