A complex machine is a machine made up of two or more simple machines that make your work easier to do. There are six simple machines from which all complex machines are made. They include: The lever. The inclined plane
Answer:
Distance traveled will be 
Explanation:
We have given speed of the light 
We have to find the distance traveled by light in 1 year
We know that 1 year = 8760 hour
And 1 hour = 60×60 = 3600 sec
So 1 year 
We know that distance = speed × time
So distance traveled by light in one year 
We have to fond the distance in km
As we know that 1 km = 1000 m
So 