Direction sense — moped rider's last heading A rider starts at a point, goes 4 km South, then turns left and rides 2 km (East), then turns right and rides 4 km. Towards which direction is he moving now?
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ANorth
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BWest
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CEast
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DSouth
Answer
Correct Answer: South
Explanation
Introduction / Context:This problem asks for the traveller's current heading (facing) after a short sequence of orthogonal moves and turns.
Given Data / Assumptions:
- Start heading: South.
- Path: South 4 km → left (to East) 2 km → right (to South) 4 km.
- All turns are 90°.
Concept / Approach:Track heading after each turn; distances do not affect the final facing—only the turn sequence does.
Step-by-Step Solution:Start facing South.Left from South ⇒ face East.Right from East ⇒ face South.Final leg is toward South; therefore the current heading is South.
Verification / Alternative check:Sketching a quick compass-box diagram (S→E→S) confirms the orientation.
Why Other Options Are Wrong:North/East/West correspond to other headings not obtained after the final right turn.
Common Pitfalls:Confusing final position with facing. The question asks “towards which direction is he moving now?”—that is, heading.
Final Answer:South