How many nanoseconds does it take light to travel 1.00 ft in vacuum? (This result is a useful quantity to remember.)

Solution 3E Step 1 of 3 8 The speed of light in vacuum, c= 3 × 10 m/s Using 1 feet = 0.3048 m c = 3 × 10 m/s( 1 feet) 0.3048 m c =9.84 × 10 ft/s Step 2 of 3 To calculate time taken by light to travel 1 feet Using fundamental relation of speed, Time taken is given by, t = S v Where t is time taken to travel ‘s’ distance with speed v. 8 Using v= c =9.84 × 10 ft/s and s= 1ft 1ft t = 8 9.84×10 ft/s 9 t=1.0162× 10 s 9 t= 1.02× 10 s