Question

How many nanoseconds does it take light to travel 3.50 ft. in vacuum?

Answer 1

I've converted meters to feet and ended up with 9.836 X 10^8 ft/s. Stuck here :/

Answer 2

distance = speed*time

3.50 feet = (9.836 X 10^8 ft/s)*time

solve for time and convert seconds to nanoseconds

Answer 3

Thanks much :)