Recent content by 909kidd

Okay, so today we discussed the question again and the answer was approved by the Professor. W=F*s No Wind: 1hr= 25km Wind: 1hr=5km 25/5= 5km Day 1 with 25km/hr worked 5x harder then the 5km/hr therefore the Answer was, (b) The ride on the windless day was harder.

But if the wind is blowing directly at you at 20KM/hr, then wouldn't the 5km/hr day be harder, since the first day is windless?

Against the Wind One windless day you ride your bicycle at 25 km/h for one hour on a flat road. The next day, you ride 5 km/h into a 20-km/h headwind for one hour on a flat road. Assuming that the force of the wind (the primary "friction" in this case) scales with the square of the...