Question

A man is running with a speed of $4ms^{- 1},$ if he feels that rain drops are hitting him vertically with speed $3ms^{- 1}$ (along unit vector $-\hat{j}$ ) then what can be the velocity of rain :

• A. $3\hat{i}-4\hat{j}$
• B. $4\hat{i}+3\hat{j}$
• C. $-3\hat{i}-4\hat{j}$
• D. $-4\hat{i}-3\hat{j}$

Answer 1

Answer: (D)

$V_{m}=4ms^{- 1}$
$V_{rm}=3ms^{- 1}$ vertically
OR