Kinematics Question 652
Question: A boat B is moving upstream with velocity 3 m/s with respect to ground. An observer standing on boat observes that a swimmer S it’s crossing the river perpendicular to the direction of motion of boat. If river flow velocity is 4 m/s and swimmer crosses the river of width 100 m in 50 sec, then
Options:
A) velocity of swimmer w.r.t ground it’s
B) drift of swimmer along river is zero
C) drift of swimmer along river will be 50 m
D) velocity of swimmer w.r.t ground it’s 2 m/s
Show Answer
Answer:
Correct Answer: A
Solution:
[a]
