Question

Planet A is approximately at a distance of 1.08×10^8 km from the Sun. If light covers 3×10^5 km in 1 second, how long does light take to travel from Sun to planet A?

Answer 1

Answer:3.6*10^18 seconds

Step-by-step explanation:

Answer 2

The light takes 360 seconds to reach planet A

Given - Distance and speed

Find - Time

Solution - In the question, distance between planet and sun is given. Also, we are told about the speed of light, which is 3*10⁵ km/s.

Now, we know speed, distance and time are related to each other as -

Speed = distance/time

Keep the values in formula to find the value of time

Time = distance/speed

Time = $\frac{1.08 \times {10}^{8} }{3 \times {10}^{5} }$

Performing Division to find the value of time.

Time = $0.36 \times {10}^{8 - 5}$

Time = 0.36*10³ seconds or 360 seconds.

Thus, sunlight will reach planet A in

360 seconds.

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