Multiple choice

A boat is moving with velocity $3\hat {i} + 4\hat{j}$ in river and water is moving with a velocity of $- 3\hat{i} - 4\hat{j}$ with respect to ground. Relative velocity of boat with respect to water is

  1. $8\hat{i}+6\hat{j}$
  2. $8\hat{i}-6\hat{j}$
  3. $6\hat{i}+8\hat{j}$
  4. $6\hat{i}-8\hat{j}$
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Relative velocity of boat with respect to water = V_boat - V_water = (3i + 4j) - (-3i - 4j) = 3i + 4j + 3i + 4j = 6i + 8j.

Keep practicing — related questions