Question

A and B are moving along same straight line in opposite direction each with speed 4 a sees that the rain drop are falling vertically while b sees the rain drop falling at an angle 45 degrees speed of rain with respect to ground

Answer 1

Answer:The velocity of rain with respect to the man=4m/s at an angle 30° with vertical.

Also, it is given that the velocity of the man with respect to ground=4m/s

The velocity of rain wrt man+velocity of man wrt ground = velocity of rain wrt ground i.e actual velocity of the rain

(by using and applying triangle law of vector addition)

So, velocity of rain wrt ground=

4

2

+4

2

+2(4)(4)cos120

​

=

16+16+32(−0.5)

​

=

32−16

​

=

1

​

6

=4m/s

Therefore the actual velocity of the rain