A shark travels at 70 kph, how long does it take the shark to travel 700 meters>?
show your work please.
show your work please.
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Math Help!
- Thread starter mackmobile43
- Start date
That is one fast shark.
BTW it takes it 36 seconds. I'll let you figure out how to get that answer. :tongue:
BTW it takes it 36 seconds. I'll let you figure out how to get that answer. :tongue:
you beat me to it Garth . 70kph = 19.444444444444443 meters per second . Roughly 36 seconds will give you 700 meters @ 70kph .
I did it the long way. At 70 KM/hr the shark would travel 70,000 meters in one hour. Since 700 meters is 1/100 of 70,000 it would travel that distance in 1/100 of an hour,or 0.6 minutes. 0.6 minutes is 36 seconds.
What brought this up mack? Trying to figure out if you can beat a shark to shore after falling from a boat 700 meters off shore? :laugh:
What brought this up mack? Trying to figure out if you can beat a shark to shore after falling from a boat 700 meters off shore? :laugh:
The way I had it figured in my head was if you traveled 60 kph then you would have a rate of speed @ 1 km per minute and if you traveled the same distance @70kph then you would decrease your kilometer time traveled by 10 seconds.
That being said then you would travel a kilometer in 50 seconds which would equate to traveling 100 meters every 5 seconds (50/100=.5)
So the distance to be traveled is 700 meters would be traveled in 35 seconds. (700/100=7x5=35)
That being said then you would travel a kilometer in 50 seconds which would equate to traveling 100 meters every 5 seconds (50/100=.5)
So the distance to be traveled is 700 meters would be traveled in 35 seconds. (700/100=7x5=35)
Well you were close,only off by one second. My grade fiver keeps coming home with questions like:
A rope is 64 meters long and is cut into three pieces.The second piece is three times as long as the first piece. The third piece is four times as long as the second piece. How long is each piece? :headbang
BTW, the answers are 4,12,and 48 meters.I had to do some thinking about how to solve that one myself but after I figured out the formula all the rest were a cinch. Amazing what not doing simple math for about 35 years will make you feel like. :laugh:
A rope is 64 meters long and is cut into three pieces.The second piece is three times as long as the first piece. The third piece is four times as long as the second piece. How long is each piece? :headbang
BTW, the answers are 4,12,and 48 meters.I had to do some thinking about how to solve that one myself but after I figured out the formula all the rest were a cinch. Amazing what not doing simple math for about 35 years will make you feel like. :laugh:
This is what a less stupider person than myself had to say about my query.
DrPhil
PATH Room Leader
Posted: Tue Dec 02, 2008 11:09 pm Post subject: 
Quote:70x1000=70000/60=1166/60=19.4
700/19.4=36 secondsI need to see units on every number, or else I don't know what is going on.
(70 km/hr)(1000 m/km)/(60 min/hr)/(60 s/min)
= (70)(1000)/(60)/(60) (km-m-hr-min)/(hr-km-min-s)
= 19.44 m/s
(700 m)/(19.44 m/s) = 36 s
Good!
DrPhil
PATH Room Leader
Posted: Tue Dec 02, 2008 11:09 pm Post subject: Quote:70x1000=70000/60=1166/60=19.4 700/19.4=36 secondsI need to see units on every number, or else I don't know what is going on.
(70 km/hr)(1000 m/km)/(60 min/hr)/(60 s/min)
= (70)(1000)/(60)/(60) (km-m-hr-min)/(hr-km-min-s)
= 19.44 m/s
(700 m)/(19.44 m/s) = 36 s
Good!
LOL there you have it. QRN tell me about it I cant even help my kids with there math as a matter of fact the new math they are teaching them ONLY THE MATH TEACHER CAN ACTUALLY HELP THEM!! There are some students seniors softmores that help out because they had the math when it first started.
My wife helps with what she understands. I help a bit but get frustrated I say here do this the kids yell no your not doing it the right way!! I say what the heck then if you know it why the hell are you asking me for help?? LOL Anyways times are sure changing when other teachers dont really understand the math what good is it really??
Im sure theres a reason but My wife just bought $350.00 worth of books to help the kids and us help them aswell but there good all the way through college theres a few more books we need but we are good for now.
My wife helps with what she understands. I help a bit but get frustrated I say here do this the kids yell no your not doing it the right way!! I say what the heck then if you know it why the hell are you asking me for help?? LOL Anyways times are sure changing when other teachers dont really understand the math what good is it really??
Im sure theres a reason but My wife just bought $350.00 worth of books to help the kids and us help them aswell but there good all the way through college theres a few more books we need but we are good for now.