Ricky after travelling for 5 km. took right turn and travelled 6 km. Before…
2025
Ricky after travelling for 5 km. took right turn and travelled 6 km. Before taking left turn and then travelled for 3 km. find his final distance from home.
- A.
10 km
- B.
12 km
- C.
13 km
- D.
16 km
Attempted by 9 students.
Show answer & explanation
Correct answer: A
Assumption: Assume Ricky starts by walking north.
Step 1: He walks 5 km north.
Step 2: He takes a right turn (faces east) and walks 6 km.
Step 3: He then takes a left turn (faces north) and walks 3 km.
Net north displacement = 8 km
East displacement = 6 km
Straight-line distance from home = sqrt(8^2 + 6^2) = sqrt(64 + 36) = sqrt(100) = 10 km
Answer: 10 km (this is the displacement from the starting point).