The time taken (in minutes) for the sunlight to reach Pluto is 321.67 minutes
What is speed?
Speed is the distance travelled per unit. Mathematically, it can be expressed as:
Speed = distance / time
With the above formula, we can obtain the time. Details below.
How to determine the time
From the question given, the following data were obtained:
- Speed = 3×10⁸ m/s
- Distance = 3.6 billion miles = 3.6×10⁹ × 1609.34 = 5.79×10¹² m
- Time = ?
The time can be obtained as illustrated below:
Speed = distance / time
Cross multiply
Speed × time = distance
Divide both sides by speed
Time = distance/ speed
Time = 5.79×10¹² / 3×10⁸
Time = 19300 s
Divide by 60 to express in minutes
Time = 19300 / 60
Time = 321.67 minutes
Thus, the time taken to reach Pluto is 321.67 minutes
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