concept of river boat

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Statements:
Some fruits are flowers.
No flower is a boat.
All boats are rivers.
Conclusions:
I. Some fruits are rivers.
II. Some rivers are boats.
III. Some rivers are fruits.
IV. Some flowers are fruits.

Q. When a man in a boat in river jumps from it on river shore, the boat moves

Q. A river is

20 m

wide. River speed is

3 m / s

. A boat starts with velocity perpendicular to river current. Velocity of boat is

5 m / s

. Find the time taken by the boat to reach the opposite bank.

Q. A boat is to cross a river of width 500 m. The velocity of the river flow is 5 kmph and the velocity of the boat is 10 krnph. The angle at which the boat is to be rowed with the direction of river flow velocity so that the boat can cross the river along shortest path is

Q. A boat is sent across the river with a velocity of

8 k m / h

in a direction perpendicular to flow of river. If resultant velocity of boat is

10 k m / h

, then velocity of river flow is:

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