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 - hatj ) then what can be the velocity of rain :

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 - hatj ) then what can be the velocity of rain : (A) 3 hati-4 hatj (B) 4 hati+3 hatj (C) -3 hati-4 hatj (D) -4 hati-3 hatj

Tardigrade Admin · Accepted Answer

Vm=4ms- 1 Vrm=3ms- 1 vertically Solution

OR

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

$3 \hat{i} - 4 \hat{j}$

$4 \hat{i} + 3 \hat{j}$

$- 3 \hat{i} - 4 \hat{j}$

$- 4 \hat{i} - 3 \hat{j}$

$V_{m} = 4 m s^{- 1}$
$V_{r m} = 3 m s^{- 1}$ vertically
OR

Q. 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 −j^​ ) then what can be the velocity of rain :

3i^−4j^​

4i^+3j^​

−3i^−4j^​

−4i^−3j^​