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?
To determine the actual velocity of the bird, we need to consider the relative velocities of the fish and the bird.
Given:
- Speed of the fish moving vertically up = 3 m/s (let's call this v_fish)
- Speed of the bird moving vertically down = 9 m/s (let's call this v_bird)
To find the actual velocity of the bird, we need to subtract the velocity of the fish from the velocity of the bird since they are moving in opposite directions.
Actual Velocity of Bird = v_bird - v_fish
Substituting the given values:
Actual Velocity of Bird = 9 m/s - 3 m/s = 6 m/s
Therefore, the actual velocity of the bird is 6 m/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