Q5. A car takes 6 hours to complete a journey at a speed of 72 km/hr . How long will another car take to complete the same journey if its speed is 15 m/sec
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Answer:
Car will take 8 hours to complete the same journey
Step-by-step explanation:
Speed = Distance / Time
Distance, D = Speed (S) * Time (T)
D = 72 * 6 = 432 km
If speed = 15 m/s or 54 km/h (conversion of m/s to km/h = 15 * (3600/1000) km/h = 15 * (18/5) km/h)
Time = Distance / Speed
T = 432 / 54 = 8 hours
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