Kinematics Question 313

Question: A boat is moving with velocity of 3i^+4j^ in river and water is moving with a velocity of 3i^4j^ with respect to ground. Relative velocity of boat with respect to water is: [Pb. PET 2002]

Options:

A) 6i^8j^

B) 6i^+8j^

C) 8i^

D) 6i^

Show Answer

Answer:

Correct Answer: B

Solution:

The relative velocity of boat w.r.t. water =vboatvwater

=(3 i^+4 j^)(3 i^4 j^)

=6 i^+8 j^



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