*For the year 2015 by Statista here.
Area by Country
Area by State USA
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Posts Tagged ‘calculation’
2a. If all the cars in the world were parked together what area would they cover? Metric Units
November 28, 20172b. If all the cars in the world were parked together what area would they cover? USA UNITS
November 28, 2017
*For the year 2015 by Statista here.
Area by Country
Area by State USA
………………….
8a. Calculate Your Daily Iron Intake
August 19, 2017
The Complaint
8a: When will I EVER use this maths?
The Cause:
Students doing repetitive text book exercises without using maths to solve REAL WORLD problems.
The Solution:
You are going to use this maths NOW.
Calculate Your Daily Iron Intake
TOPICS: Decimals, %, weight units (METRIC)
Some information you need.
Iron (Chemical symbol:Fe) content in food is recorded in mg because there are only small amounts of iron in food.
1 g = 1000 mg
eg. 1 paper clip = 0.5 g = 500 mg
Iron in 2 teaspoon peanut butter = 0.19 mg
Full Page Worksheet PDF:Daily Iron Intake Calculation Work Sheet
WORKED EXAMPLE: Breakfast
More info here
8c. What Volume of Alcohol is Lethal?
August 14, 2017
The Complaint
8c: I Will Never Use this Maths
The Solution:
You are going to use this maths NOW……………..
……………………………………………………………………..
How much alcohol will kill you?
TOPICS: Decimals, %, algebra, vol, weight units (Metric)
At low levels of consumption alcohol impairs decision making and inhibits coordination. It makes you DUMB and CLUMSY, which can cause serious injuries if you, say, fall down stairs.
Legal Age to Buy or Sell Alcohol USA: 21 years
Legal Age to Buy or sell Alcohol AUST, NZ & UK: 18 Years
Legal Age to Buy or sell Alcohol CANADA: 18 – 19 Years depending on region.
At higher levels of consumption ALCOHOL can kill. It is a depressant. It acts on your central nervous system. It can STOP YOU BREATHING.
WORKSHEET PDF: How Much Alcohol Would Kill You? WORKSHEET
WORKED EXAMPLE
1. Calculate the weight of (pure) alcohol or ethanol in the following standard drinks using the following information:
Now Ethanol = 0.79 gm/ml
More information @ alcohol.org.nz
The Simple Maths of a Car used as a Weapon … METRIC units
February 3, 2017
Nice Truck Attack 2016 The Independent, UK
Berlin Christmas Maraket Attack 2016, ABC
Melbourne Car Attack 2017.
Cars (and trucks) have been used as weapons by drivers purposefully driving into crowds including:
2014: Saint-Jean-sur-Richelieu, Quebec
2014 : Jerusalem, Israel.
2016: Nice, France
2016: Berlin, Germany
2017: Jerusalem, Israel
2017: Melbourne, Australia.
What does the maths tell us?
Melbourne is Mathspig’s home town. The car attack killed, tragically, 6 people and injured many more. The question many seem to ask is:
Why can’t people get out of the way?
Look at the video below of the Melbourne car. It doesn’t appear to be going that fast. But the maths tells a different story. You need quite a distance between you and a car travelling at approx 60 kph to have enough time to run clear. (See calculations below)
How fast do you react?
We will set your reaction time at 0.4 sec. This allows time for you to react and turn. If you want to test your reaction time go here. But remember you have to turn as well.
How fast would you run?
According to the Telegraph, UK, the average human can run at 15.9 mph (25.6 kph) and the National Council of Strength and Fitness 15 mph (24.1kph), which Mathspig has rounded off to 25 kph.
How do you escape a car travelling at 60 kph towards you when you are less than 9 m away?
Jump upwards!
You might reduce the impact and even go over the roof.
The Simple Math of a Car used as a Weapon … USA units
February 3, 2017Nice Truck Attack 2016 The Independent, UK
Berlin Christmas Maraket Attack 2016, ABC
Melbourne Car Attack 2017.
Cars (and trucks) have been used as weapons by drivers purposefully driving into crowds including:
2014: Saint-Jean-sur-Richelieu, Quebec
2014 : Jerusalem, Israel.
2016: Nice, France
2016: Berlin, Germany
2017: Jerusalem, Israel
2017: Melbourne, Australia.
What does the math tell us?
Melbourne is Mathspig’s home town. The car attack killed, tragically, 6 people and injured many more. The question many seem to ask is:
Why can’t people get out of the way?
Look at the video below of the Melbourne car. It doesn’t appear to be going that fast. But the math tells a different story. You need quite a distance between you and a car travelling at approx 35 mph to have enough time to run clear. (See calculations below)
How fast do you react?
We will set your reaction time at 0.4 sec. This allows time for you to react and turn. If you want to test your reaction time go here. But remember you have to turn as well.
How fast would you run?
According to the National Council on Strength and Fitness the average human can run at the speed of 15 miles per hour for short periods of time.
How do you escape a car travelling at 35 mph towards you when you are less than 27 ft away?
Jump upwards!
You might reduce the impact and even go over the roof.
Tennis: Andy Murray is serving. How long have you got to return his serve?
January 19, 2017No. 1 UK tennis star Andy Murray is currently playing in the Melbourne Open.
Mathspig often pops along to watch the tennis.
Andy Murray’s Serve by Carineo6
Could you return Andy Murray’s serve?
According to Wikipedia Andy Murray’s fastest serve speed is:
Andy Murray = 233 km/h (145 mph)
Keep in mind the fastest female tennis serve by Barbora Záhlavová-Strýcová is a very respectable 225 km/h (140 mph).
Go here to see why this simplified calculation works!
Mathspig tested her reaction time here. TRY IT!
Mathspig’s best, best, best reaction time = O.33 sec
Could Mathspig return Andy Murray’s serve?
Nooooo!…………………………………………………………………….
I’d be hit in the head by a speeding tennis ball
before I even moved.
But I’m a pig. I got the best service GRUNT! Ha!
