# Question #3f1d8

##### 2 Answers

#### Answer:

If a man is standing by the track and train is running at

#### Explanation:

If he is also running at

If he run to north at

Hope this explains the relative velocity.

#### Answer:

**Concept**.

For rain problem,

If

#### Explanation:

Following the above logic

See the vector representation on the right side of the figure above.

- Velocity vectors
#vecV_m and vec V_r# are drawn. - Recall
#-ve# sign in front of the the second term.

Therefore, draw#-vecV_m# at the tip of#vecV_r# - Join the tail of
#vecV_r# to the tip of#-vecV_m# to obtain#vecV_(rm)# as velocity of rain with respect to man.

Similar steps need to be followed if

- Velocity vectors
#vecV_m and vec V_r# are drawn. - We are to find out
#vecV_(mr)# , velocity of man with respect to rain.

We know that#vecV_(mr)=vecV_m-vecV_r#

Therefore draw#-vecV_r# at the tip of#vecV_m# - Join the tail of
#vecV_m# to the tip of#-vecV_r# to obtain#vecV_(mr)# as velocity of man with respect to rain.