Answer:

Explanation:
Given that,
Lightning flashes one mile (1609 m) away from you.
We need to find the time it take the light to travel that distance. Let the time be t. We know that,
speed = distance/time

So, the required time is 
force times gravity (FG) =mass times gravity (mg)
<span>Assuming the car is travelling in the same direction for the entire hour, the acceleration is zero.</span>