can you SOLVE it.....!!!
Classical Mechanics
Level
1
A man can row 6 Km/hr in still water. When the river is running at 4 km/hr,it takes him 2h 15min to row to a place and back.How far is the place? [Hint:Study the downstream and upstream motion basics]
18.009
3.75
22.32
3.83
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Let the distant between the place and the place where he starts be x.
while travelling from the place where he starts to the destination, the time taken by him is x/10 -----(1)
while travelling from the destination to the place where he start to row,the time taken by him is x/2 --------(2
(1)+(2) =>x/10+x/2 =2\frac{1}{2}
=>2x+10x/20=9/4
=>12x/20=9/4
=>12x=45
=>x=45/12
=>x=3.75