Thje relative speed between the car and the truck is 13 km/h. At 13 km/h how long will it take to cover 130 m? (you better get .01 hours or 36 seconds).
Now... You go figure out the other one. All it takes is a little bit of 'horse sense'.
Doug
ROTFLMSFAO!!!!!!!!!!!!!!!!!
The answer is d. But everybody who lives here, in Tucson, just shakes their heads and laughs about that whole 'Biosphere' joke.
Doug
I'm no longer a 'Top Contributor' because I don't have enough time to hang out here. But no, I don't work for NASA. I know some people who do, and I've done a couple of consulting things that ended up involved with the Space Program, But that's about the extent of my relationship to NASA.
Doug
That really is a very excellent question.
My guess is that a races interest in (and involvement with) technology is probably proportional (in some sense) to how difficult it is for them to survive. i.e. How much work do they have to do to provide whatever their 'basic necessities' are?
Also...