a fish vertically up towards the surface of water with speed 3m/s observes a bird diving vertically down towards it with speed 9m/s.what is the actual velocity of bird?
5 answers
6m/s
myself sameeksha ,i had posted a question but the answer given by sankar is wrong ,its answer is 4.5m/s.and plz tell me how it is solved
If 4.t is the correct answer then here is my soln.(Someone said 4.5 is wrong but i think its correct)
velocity of bird neglecting fish vertical rise =6m/s
mu= A/r(in this case since bird in in rarer medium)
4/3=a/r
(4/3)dr/dt=da/dt
dr/dt=6*3/4
4.5
velocity of bird neglecting fish vertical rise =6m/s
mu= A/r(in this case since bird in in rarer medium)
4/3=a/r
(4/3)dr/dt=da/dt
dr/dt=6*3/4
4.5
Is dr/dt means actual velocity??
Bijay ans is correct
1 answer