A fishing boat is anchored 9 km away from the the nearest point on the shore. A messanger must be sent from the fishing boat to a camp, 15 km from the point on shore closest to boat. If the messanger can walk at a speed of 5 km per hour and can row at 4 km/h. determine the distance of that point (in km) from the shore, where he must land so as to reach the shore in least possible time.

A fishing boat is anchored 9 km away from the the nearest point on the

1.	A fishing boat is anchored 9 km away from the the nearest point on the shore. A messanger must be sent from the fishing boat to a camp, 15 km from the point on shore closest to boat. If the messanger can walk at a speed of 5 km per hour and can row at 4 km/h. determine the distance of that point (in km) from the shore, where he must land so as to reach the shore in least possible time.
Answer» Correct Answer - 4

Discussion

No Comment Found

Related InterviewSolutions

SI unit of acceleration isA. mB. m/sC. `m//s^(2)`D. s
What is the SI unit of displacement ?A. LengthB. VelocityC. EnergyD. Acceleration
The distance covered by a moving body is directly proportional to the square to the time. The acceleration of the body isA. IncreasesB. Remains constantC. Is zeroD. Decreases
A boy standing on the top of a tower of height 54 ft. throws a packet with a speed of 20 ft/s directly aiming towards his friend standing on the ground at a distance of 72 ft from the foot of the tower. The packet falls short of the person on the ground by `x xx(16)/(3)` ft. The value of x is
If the displacement of a particle is zero, then distance covered by itA. Must be zeroB. Must not be zeroC. Must be unityD.
If distance coverd by a particle is zero , what can be its displacement ?
STATEMENT - 1 : If person walks in a straight line and never changes direction, then the distance and the displacement will have exactly the same magnitude. STATEMENT - 2 : The phrase '20 m, northwest' likely describe the distance for a motion. STATEMENT - 3 : The phrase '20 m, west' likely describes the displacement for a motionA. TFTB. TTFC. FTTD. TTT
STATEMENT - 1 : Distance is a vector quantity and displacement is a scalar quantity. STATEMENT - 2 : A person makes a round - trip journey, finishing where she started. The displacement for the trip is 0 and the distance is some nonzero value. STATEMENT - 3 : A person starts at position A and finishes at position B. The distance for the trip is the length of the segment measured from A to B.A. TTTB. FTFC. FFFD. TFT
STATEMENT - 1 : Acceleration of a car moving on a circular track of radius r with speed v , for the person sitting in the car is zero. and STATEMENT - 2 : In the frame of reference of a person sitting in a car, the car always remains at rest irrespective of its motion with respect to ground.A. Statement-1 is True, Statement-2 is True, Statement-2 is a correct explanation for Statement-8B. Statement-1 is True, Statement-2 is True, Statement-2 is NOT a correct explanation for Statement-8C. Statement-1 is True, Statement-2 is FalseD. Statement-1 is False, Statement-2 is True
If the velocity of an object is increasing and changing at a uniform rate then the acceleration of the object is `"(i) Positive (ii) Zero"` `" (iii) Negative (iv) Not defined"`

Discussion

No Comment Found

Related InterviewSolutions

Reply to Comment