How much time (in seconds does it take light to travel 1.20 billion km?

2 answers:

7 0

Ok so light goes at a speed of <span>299,792 kilometers per second
so if my math is right 1.2 billion/299,792= 3335.646047926562 seconds

</span>

laila [671]3 years ago

4 0

Answer:

Time, t = 4000 seconds

Explanation:

We know that,

$1\ billion\ km=1.2\times 10^9\ km$

$1\ billion\ km=1.2\times 10^{12}\ m$

The speed of light, $c=3\times 10^8\ m/s$

Let t is the time taken by light. It can be calculated as :

$t=\dfrac{d}{c}$

$t=\dfrac{1.2\times 10^{12}\ m}{3\times 10^8\ m/s}$

t = 4000 seconds

So, the time taken by the light is 4000 seconds, Hence, this is the required solution.

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