Correct Answer - Option 2 : 15 km.
Given:
Speed = 90 km/hr.
Formula used:
Distance = Speed × Time
Concept used:
To convert km/hr. to m/s, multiply by 5/18
Calculation:
Distance = [90 × (5/18) × 10 × 60] meter.
⇒ D = 15000 meter.
Change in km into meter.
⇒ D = 15 km
∴ The distance is 15 km
