Question

A man standing on a road has to hold his umbrella at 30degrees with vertical to keep the rain throws the umbrella and starts running at 10 kmph. He finds that rain drops are hitting his head vertically the speed of rain drops reletives to the ground is

Answer 1

Answer:

Here, two balls each of mass 0.25 kg are moving towards each other than in a straight line, one at 3ms

−1

and the other at 1ms

−1

collide and the balls stick together after the collision, hence

m

1

u

1

−m

2

u

2

=(m

1

+m

2

)v

(0.25)(3)−(0.25)(1)=(0.25+0.25)v

(0.75)−(0.25)=(0.5)v

v=1ms

−1

please mark me brain list at least I have answered something