Quote:
Originally posted by Mr.Wong
Didn't even see this. This is also correct. The train will travel -900m. How long would the train travel total? 1200 miles.
What's 1200-900=300 meters.
bdjuf where do you even address the time 30 seconds in your equation?
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the graph shows that it would stop after 20 seconds, because of the deceleration speed
the extra 10 seconds would be 10 seconds of rest, in this case
if there WAS no context, then yes, it woulda been 300m because he woulda went 100m backwards
but since there IS context, its 400m
