OK. You have to go down in no time at all. 30 minutes to go 15 miles to the top. If you want to average 60 an hour you have to get down in no time to make 30 miles in 30 minute which is 60 miles per hour.
Question
- Thread starter lilly
- Start date
OK. You have to go down in no time at all. 30 minutes to go 15 miles to the top. If you want to average 60 an hour you have to get down in no time to make 30 miles in 30 minute which is 60 miles per hour.
888888
Council Member
well since your just driving from the top to the bottom, I would say you need to be going 60 MPH average to go from the top to the bottom at an average speed of 60MPH.
If your talking up and down to average 60 mph you would have to average 90 going down, after averaging 30 on the way up, assuming the hill is 15 miles down on the other side.
If your talking up and down to average 60 mph you would have to average 90 going down, after averaging 30 on the way up, assuming the hill is 15 miles down on the other side.
No struggle involved. That was the first thing off the top of my head. Average 30 mph going up; you gotta at least do 60 going down plus compensate for the slower rate going up.
Ah, so you do the Star Trek thing and BEAM down; right, Scotty.
NightSwimmer
Senator
Jack was correct. If you make half of your trip at 30 mph, then you must travel the other half of the trip at 90 mph to average 60 mph over the entire trip. The total distance and the total elapsed time are both irrelevant to the average velocity.
Yes, unintuitive as it seems, that is what it takes. Maybe it would have been easier for all the skeptics if I had made the hill 30 miles to the top. Average speed is distance traveled divided by time spent traveling. If the hill were 30 miles to the top it would take you an hour to get there at 30 miles per hour and if you "beamed down" then you would have traveled 60 mile in an hour for an average speed of 60 miles per hour.
If you went down the a 30 mile hill at 90 miles per hour it would take you ten minutes and total distance divided by time would be 60 miles by 70 minutes or about 51.4 miles per hour. If we weren't talking about a fixed distance and you drove for an hour at 30 miles per hour and then for an hour at 90 miles per hour you would travel 120 miles in two hours for an average speed of 60 miles per hour but to "average speeds" you have to travel at both speed for the same amount of time.
I have found this useful to keep in mind when going to my work which is about 23 miles away knowing if I have to go half the distance at 30 mph I'm NOT going to average 45 mph and get there in half an hour going the other half at 60 mph.
Wrong. Average velocity is the the sum of the velocities times the times traveled at those velocities divided by the total time, not just the sum of the velocities divided by the number of velocities. See above.
D
Doc
Guest
I just wanna know where you can find a Bat and a Ball for a dollar and ten pennies????
That said, the Ball would be $.05, and the bat would be $1.05.
(League membership will be $75.00 for the Summer, Uniform will cost $35.00, and all the pads, gloves, mits, helmets, etc. will come up to about $100.00)
Watching my Nephew crack smart-assed remarks to the batters from behind home plate: PRICELESS!
That said, the Ball would be $.05, and the bat would be $1.05.
(League membership will be $75.00 for the Summer, Uniform will cost $35.00, and all the pads, gloves, mits, helmets, etc. will come up to about $100.00)
Watching my Nephew crack smart-assed remarks to the batters from behind home plate: PRICELESS!
D
Doc
Guest
Okay, I know how it can be done. One side of the fill is a 15 mile incline; the other side is a cliff.
....
Corruptbuddha
Governor
You could say that he also send all 96 in large boxes, or 12 cartons.
Since 96 is more than zero, it would also be correct, wouldn't it?
Since 96 is more than zero, it would also be correct, wouldn't it?
Yes, there were no dimensions but the question asked, quote: If there are more large boxes than small boxes, how many cartons did he ship?
Corruptbuddha
Governor
And, in my answer, there certainly are more large boxes (96) than small (0).
I guess my answer is outside the box....so to speak.
I guess my answer is outside the box....so to speak.
