Two cars start from the same point. One travels north at 60 km/h, the other travels east at 80 km/h. What is the distance between them after 2 hours?
Show answer & explanation
Correct answer: D
Explanation
Distance covered by the first car = 60 × 2 = 120 km
Distance covered by the second car = 80 × 2 = 160 km
The two directions are perpendicular to each other.
Distance = √(120² + 160²)
= √(14400 + 25600)
= √40000
= 200 km