- #1
sc8
- 7
- 0
- Homework Statement
- A vacationer gets into his outboard motorboat and leaves a dock on a river bank for a day of fishing. Just as he turns upstream, he hears a splash but pays no attention and continues cruising at normal speed. Unfortunately, only 30.0 minutes later does he realize that his (fortunately watertight) lunchbox is missing. He then turns downstream, with the motor still set at cruising speed. Luckily, he sights his lunchbox floating down the river and retrieves it at a point 2.4 km downstream of the dock.
How long after turning around does he pick up his lunch?
- Relevant Equations
- v= d/t
Vae=Vab+Vb
The answer was revealed to be 30 minutes after turning around- but I'm having trouble understanding why. Can someone please explain this to me? Does it have something to do with relativity?