Prem walks 13 metres towards north. He turns right and walks 11 metres. He…
2021
Prem walks 13 metres towards north. He turns right and walks 11 metres. He rotates by 90 degrees in anti-clockwise direction and walks 11 metres. He then rotates by 90 degrees in anti-clockwise direction and walks 4 metres. How far and in which direction is his starting point from the finishing point?
- A.
25 metres, South-west
- B.
33 metres, North-east
- C.
25 metres, North-east
- D.
33 metres, South-west
Attempted by 16 students.
Show answer & explanation
Correct answer: A
Prem's final position is 7 m east and 24 m north of the start. Therefore the starting point is 7 m west and 24 m south of the finish. The distance is sqrt(7^2 + 24^2) = 25 m, in the south-west direction.