Dhanush crosses a road 100 metres wide in 50 seconds. His speed in km/hr is:
Dhanush crosses a road 100 metres wide in 50 seconds. His speed in km/hr is:
धनुष 100 मीटर चौड़ी सड़क को 50 सेकंड में पार करता है। उसकी गति किमी/ घंटे में है:
Detailed Solution & Logic
Correct Answer:
7.2 km/h / 7 किमी/ घंटा
📊 Step-by-step Solution
Given:
- Distance = 100 m
- Time = 50 sec
🔹 Step 1: Speed in m/s
Speed = $\frac{\text{Distance}}{\text{Time}} = \frac{100}{50} = 2 \text{ m/s}$
🔹 Step 2: Convert m/s to km/h
👉 Formula: multiply by $\frac{18}{5}$
Speed = $2 \times \frac{18}{5} = \frac{36}{5} = 7.2 \text{ km/h}$
Final Answer:
👉 7.2 km/h / 7.2 किमी/ घंटा
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