- #1
turnstile
- 26
- 0
A mountain rescue post O receives a distress call via a mobile phone from a walker who has broken a leg and cannot move. The walker says he is by a pipeline and he can also see a radio mast which he believes to be south-west of him. The pipeline is known to run north-south for a long distance through the point with position vector 6i km, relative to O. The radio mast is known to be at the point with position vector 2j km, relative to O.
(a) Using the information supplied by the walker, write down his position vector in the form (ai + bj).
The rescue party moves at a horizontal speed of 5 km h-1. The leader of the party wants to give the walker and idea of how long it will take to for the rescue party to arrive.
(b) Calculate how long it will take for the rescue party to reach the walker’s estimated position.
The rescue party sets out and walks straight towards the walker’s estimated position at a constant horizontal speed of 5 km h-1. After the party has traveled for one hour, the walker rings again. He is very apologetic and says that he now realizes that the radio mask is in fact north-west of his position
(c) Find the position vector of the walker.
(d) Find in degrees to one decimal place, the bearing on which the rescue party should now travel in order to reach the walker directly.
------
If you've helped me before... you'd know that I explain what i plan to do with the question and whether or not i have it right... but this one .. i have absolutely no clue
i can get as far as drawing the diagram of 6 units in the x-axis and 2 units in the y axis...
please help...
(a) Using the information supplied by the walker, write down his position vector in the form (ai + bj).
The rescue party moves at a horizontal speed of 5 km h-1. The leader of the party wants to give the walker and idea of how long it will take to for the rescue party to arrive.
(b) Calculate how long it will take for the rescue party to reach the walker’s estimated position.
The rescue party sets out and walks straight towards the walker’s estimated position at a constant horizontal speed of 5 km h-1. After the party has traveled for one hour, the walker rings again. He is very apologetic and says that he now realizes that the radio mask is in fact north-west of his position
(c) Find the position vector of the walker.
(d) Find in degrees to one decimal place, the bearing on which the rescue party should now travel in order to reach the walker directly.
------
If you've helped me before... you'd know that I explain what i plan to do with the question and whether or not i have it right... but this one .. i have absolutely no clue
i can get as far as drawing the diagram of 6 units in the x-axis and 2 units in the y axis...
please help...