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`        when going east at 10 kmph a train moving with const. velocity appears to be moving exactly north east . when my velocity is increased to 30 kmph east it appears to be moving north. a.what is the velocity of train in noth? b.what is the velocity of train along east? ​c.what speed should i move north so that train appears to move exactly south-eadt? please provide commplete  solution in details.. :)`
3 years ago

Arun Kumar
IIT Delhi
256 Points
```										HelloYou should apply concept of reletive velocity here$\\\vec v_{man}=10\vec i \\\vec v_{train}=x\vec i +y \vec j \\\vec v_{train,rel}=(x-10)\vec i +y \vec j \\=>x-10=y since both component should be equal \\ to be in in north east \\\vec v_{train,rel}=(x-30)\vec i +y \vec j \\=>x-30=0 \\=>x=30 =>y=20 \\\vec v_{train}=30\vec i +20 \vec j$Now you can find everything.Thanks & RegardsArun KumarBtech IIT DelhiAskiitians faculty
```
3 years ago
shalini
14 Points
```										Thanq very much Sir :)but why should x-10 be equal to y??? :/
```
3 years ago
shalini
14 Points
```										Ok ok..is it because angle is 45 degree so...x- component and y- component must b equal????.. Am I right Sir???
```
3 years ago
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