Question

The speed of light is 3 x 105 kilometers per second. What is that in standard form?

Answer 1

$v=3*10^{5} \frac{km}{s} =300 \ 000 \frac{km}{s}$

Answer 2

Answer:

speed of light is 3 x $10^{8}$ meters per second.

Step-by-step explanation:

Given : The speed of light is 3 x $10^{5}$ kilometers per second.

To find :  What is that in standard form.

Solution : We have given 3 x $10^{5}$ kilometers per second.

First we convert it in to meter per sec.

We can write  

3 x $10^{5}$ = 300000 kilometer per second .

We know that 1 km = 1000 meter.

Then 300000000 meter per second

Now,   3 x $10^{8}$ meter per second.

Therefore,  speed of light is 3 x $10^{8}$ meters per second.