Question

King Arthur is riding his horse toward a raised drawbridge of his castle with a velocity of five m/s westward. The drawbridge attendant begins to lower the drawbridge which takes 15 seconds to lower. If King Arthur is 80 meters east of the edge of the moat when the drawbridge begins to go down will the drawbridge lower in time for him to cross without stopping?

Answer 1

yes , the drawbridge will finish lowering 1 second before king arthur arrives 

Answer 2

yes, king Arthur will be 1 second early  for the drawbridge to lower.

the key is to find the time by dividing the distance over the velocity (speed) and you get 16 seconds therefore you have one extra second left