A fly travelling north at 5km/hr hits a train travelling south at 60km/hr. The fly and train are both now heading south at 60km/hr but to do that the fly must have gone 5,4,3,2,1,0,1,2,3.....60, so at some stage touching the train the fly was at 0 km/hr and so too must the train have been. Please explain is this true and why
2007-01-07 22:54:30 · 4 answers · asked by fsjock 2 in Travel ➔ Travel (General) ➔ Other - Destinations
Instantaneous or not ye nerds common sence with no need of advance calculus fractal uncertainty hypothesis says it did slow down and speed up over no distance and a very short period of time. velocity = distance / time then 0=0/.000000000000000etc
2007-01-07 23:10:06 · update #1
NOT TRUE!.......sorry
2007-01-07 22:57:11 · answer #1 · answered by Anonymous · 0⤊ 1⤋
everything you have stated is flawed. the fly did not slow down as it approached the train. it was still going 5 km/s. it would look mroe like 5, 5, 5, 5, 5, -60, -60. the -60's being the fly is moving in the other direction with the train. this is an instantanious change in velocity you will learn about in calculus based physics classes
2007-01-08 06:59:42 · answer #2 · answered by Dashes 6 · 0⤊ 0⤋
The train doesn't stop. Just because the velocity of the fly at some stage is 0, doesn't mean the train was too...
2007-01-08 07:02:06 · answer #3 · answered by Cougie 2 · 0⤊ 0⤋
coz the fly meet the train @ station, so the trainmust stopped by itself... LOL
2007-01-08 08:27:21 · answer #4 · answered by Anonymous · 0⤊ 0⤋