## College Physics (4th Edition)

We can find the time it takes for sunlight to travel from the sun to the Earth: $t = \frac{d}{c}$ $t = \frac{1.5\times 10^{11}~m}{3.0\times 10^8~m/s}$ $t = 500~s$ It takes 500 seconds for sunlight to travel from the sun to the Earth.