Question

23. A motorboat is racing towards north at 36 km/h w.r.t.
water and the speed of water current in that region
is 10 km/h towards east. The resultant speed of the
boat is nearly
(1) 37 m/s
|(2) 37 km/h
(3) 46 km/h
(4) 26 km/h​

Answer 1

Answer:-

26 kmph

Explanation:-

Given:

Velocity of boat is 36kmph towards north w.r.t water

Velocity of the water is 10kmph towards east

To Find:

Resultant speed of boat

Solution:

$V_{bw} : \texttt{\green{velocity \: of \: boat \: w.r.t \: water}}$

$V_{b} :\texttt{\green{velocity \: of \: boat}}$

$V_{w} : \texttt{\green{velocity \: of \: water}}$

$V_{bw} = 36kmph$

$V_{w} = 10kmph$

w.k.t,

$V_{bw} = V_b + Vw$

$V_{b} = V_{bw}-V_w$

$V_{b} = 36-26$

$V_{b} = 26kmph$......option(4)