- #1
saac
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Homework Statement
A women and her dog are out for a morning run to the river, which is located 4km away. The women runs at 2.5m/s in a straight line. The dog is unleashed and runs back and forth at 4.5m/s between his owner and the river, until the women reaches the river. What is the total distance run by the dog?
Homework Equations
Average speed=d/t
not sure what else.
The Attempt at a Solution
I figured that you have to figure out the total time it takes the dog to make it to the river. Which is 888.9s(4000m/4.5m/s). Then calculate where the women is when the dog reaches the river. So 2.5m/s*888.9=2222.25m... I do not know how to calculate the dogs return to the women while she is still moving at 2.5m/s. Help please. Got a week to learn kinematics