You head downstream on a river in a canoe. You can paddle at 5.2 km/h and the river is flowing at 2.2 km/h. How far downstream will you be in 30 minutes?
physics - Steve, Wednesday, October 5, 2011 at 4:32am
add river's speed to rowing speed = 7.4 km/h
so, how far in 1/2 hour?