A boat moves with the stream of water from point A and B and it return back with the same speed.
Velocity of boat relative to water is η times the velocity of the water. Velocity of the water is 1m/sec. Find
out the average speed in the whole iternary
Answers
Answered by
1
Answer:
n -1
Explanation:
Answered by
0
Answer:
The correct option is B
N
2
−
1
N
When, boat moves from A to B it covers AB distance in time
t
1
s
e
c
.
given, Speed of the boat in flow =
N
+
1
m
/
s
As we know,
S
p
e
e
d
=
D
i
s
t
a
n
c
e
T
i
m
e
Then,
N
+
1
=
A
B
t
1
Similarly from B to A distance,
Speed of boat =
N
−
1
m
/
s
Let
t
2
s
e
c
be the time taken. Then,
N
−
1
=
B
A
t
2
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