Posts Tagged ‘velocity’
July 10, 2023
In nearly every Action Movie our hero possibly holding hands with his love interest will run and jump ( just in time ) out of the way of explosion. eg. Man on Fire (2004) with Denzel Washington, The Marine (2006) with John Triton, Mad MAX FURY ROAD (2015) with Charlize Theron and Predator 2 (1990) with Danny Glover .
We will use car bomb stats that come from the U.S. Bureau of Alcohol, Tobacco and Firearms. (We in Australia can only assume this bureau exists because, um , there are many exploding cigars in America.) You will find these at Car Bomb Response.
Posted in 10 Movie Cliches Debunked with Maths, algebra, Decimals, Hollywood Maths, Middle School, Movie Math, units length, units speed | Tagged 10 Movie Cliches Debunked with Math, bomb, car, Cliche, explosion, fireball, Mad Max, Middle school, movie, outrun, Predator, Shock wave, speed, velocity | Leave a Comment »
May 24, 2023
The names Bond, James Bond. In Moonraker with Roger Moore (1979) 007 jumps out of a plane without a parachute to avoid an assassination attempt. He catches up with, Jaws, arch-baddie, in mid-air and takes his parachute. Jaws survives his fall by landing on a big top circus tent.
In Point Break with FBI agent Johnny Utah, Keanu Reeves, leaps from a skydiving plane after Patrick Swayzes’ characer, Bohdi, who has taken the last parachute. Utah catches Bohdi in mid-air, and after a tense confrontation with a gun, both survive using Bodhi’s chute. The remake was in 2015.
There are more movie and real life stories at the Free Fall Maths link.
Note: We’ll assume Bhodi and Utah have equal horizontal velocities (plane exit velocity plus wind) so the following calculations only involve the vertical or falling velocity. The terminal velocities used for Bhodi and Utah are realistic estimates.
Posted in 10 Movie Cliches Debunked with Maths, Hollywood Maths, Simultaneous Equations, units length, units speed | Tagged altitude, Break Point, calculate, Can you catch, challenge, jump, Math %, Moon Raker, movie, simultaneous equation, sky diving, terminal, Time, velocity, without parachute | Leave a Comment »
April 19, 2022
………………………………………………
The following maths is suitable for Year 9+
but can be presented to lower grades just to show
maths is cool!
Posted in Football Maths: The longest kick!, geometry, Middle School, Senior School, Sport Maths, trigonometry, Year 12 mathspig, Year 9 Mathspig | Tagged angle, Aussie Rules, best angle, calculate, football, how to, Longest kick, Math %, pythagoras, Rugby, Soccer, trigonometry, USA, vectors, velocity | Leave a Comment »
October 9, 2019
This is a repost of Mathspig’s very popular Stuntman/woman series.
Star Stuntmen
Star Stuntmen Monte Perin (pictured) has involved many films, including “Spider-Man,” “Star Trek, “Indiana Jones and the Kingdom of the Crystal Skull” and portraying Arnold Schwarzenegger’s stunt double in “Terminator 3: Rise of the Machines.”
Perhaps his most difficult stunt was landing his Harley in an open boxcar of a moving train for Disney’s 2008 Adam Sandler movie “Bedtime Stories”. In a career of over 25 years Perin has broken “almost everything” including both his arms, legs, knees, feet, ankles, several ribs, his back and his pelvis. See Confessions of a stuntman
Veteran stuntman Evel Knievel (1938 – 2007) was the pioneer of many stunt jumps. Here he is jumping 10 cars and 3 vans in 1973.
His injuries are legendary:
More Evel Knievel
Ramp Design
The angle of the kicker in ramp design can vary from 100 – 700 (See below)
Moto-X Ramp Jump Maths
As any bike nut knows increasing speed and angle of take off will increase jump distance.
Here is a graph from final gear for speed vs angle to jump 90m.
METHOD 1 is approximate (See STEP 1 & STEP 2 above), but as METHOD 2 produces the same ans (See above), it is very useful.
You will find a thoroughly detailed calc for STUNT JUMP MATHS here:
And everything you ever wanted to know about PHYSICS OF STUNT JUMPS here.
Posted in algebra, Decimals, Real Life Math, Stuntman Maths, Year 7 mathspig, Year 9 Mathspig | Tagged angle, calculate, design, Evel Knieval, film, injuries, jump, Math, moto X, motorbike, optimum speed, ramp, speed, stuntman, velocity | 1 Comment »
May 25, 2019
………………………………………………
The following maths is suitable for Year 9+
but can be presented to lower grades just to show
maths is cool!
Posted in Football Maths: The longest kick!, Parabolas, trigonometry, Year 12 mathspig | Tagged angle, best angle, calcualte, cool, football, footy, Longest kick, Math, pythagoras, Rugby, Soccer, trigonometry, USA, vectors, velocity | Leave a Comment »
January 15, 2019
You will find all the ballistics stats you need here:
Posted in 10 Movie Cliches Debunked with Maths, Arithmetic, decimals, Hollywood Maths, Middle School, units length, units speed, Year 9 Mathspig | Tagged .40 caliber, ballistics, bullet, calculation, Cliche, duck, gun, gun safety, Math, Middle school, movie, pistol, smith & Wesson, speed, velocity | Leave a Comment »
January 14, 2019
In nearly every Action Movie our hero possibly holding hands with his love interest will run and jump ( just in time ) out of the way of explosion. eg. Man on Fire (2004) with Denzel Washington, The Marine (2006) with John Triton, Mad MAX FURY ROAD (2015) with Charlize Theron and Predator 2 (1990) with Danny Glover .
We will use car bomb stats that come from the U.S. Bureau of Alcohol, Tobacco and Firearms. (We in Australia can only assume this bureau exists because, um , there are many exploding cigars in America.) You will find these at Car Bomb Response.
Posted in 10 Movie Cliches Debunked with Maths, algebra, Decimals, Hollywood Maths, Middle School, units length, units speed | Tagged 10 Movie Cliches Debunked with Math, bomb, car, Cliche, explosion, fireball, Mad Max, Math, movie, outrun, Predator, Shock wave, speed, stunt, velocity | Leave a Comment »
January 10, 2019
The names Bond, James Bond. In Moonraker with Roger Moore (1979) 007 jumps out of a plane without a parachute to avoid an assassination attempt. He catches up with, Jaws, arch-baddie, in mid-air and takes his parachute. Jaws survives his fall by landing on a big top circus tent.
In Point Break with FBI agent Johnny Utah, Keanu Reeves, leaps from a skydiving plane after Patrick Swayzes’ characer, Bohdi, who has taken the last parachute. Utah catches Bohdi in mid-air, and after a tense confrontation with a gun, both survive using Bodhi’s chute. The remake was in 2015.
There are more movie and real life stories at the Free Fall Maths link.
Note: We’ll assume Bhodi and Utah have equal horizontal velocities (plane exit velocity plus wind) so the following calculations only involve the vertical or falling velocity. The terminal velocities used for Bhodi and Utah are realistic estimates.
Posted in 10 Movie Cliches Debunked with Maths, Hollywood Maths, Simultaneous Equations, units length, units speed | Tagged altitude, Break Point, calculate, Can you catch, challenge, jump, Math, Moon Raker, movie, simultaneous equation, sky diving, terminal, Time, velocity, without parachute | Leave a Comment »
October 23, 2018
Star Stuntman
Star Stuntman Monte Perin (pictured) has involved many films, including “Spider-Man,” “Star Trek, “Indiana Jones and the Kingdom of the Crystal Skull” and portraying Arnold Schwarzenegger’s stunt double in “Terminator 3: Rise of the Machines.”
Perhaps his most difficult stunt was landing his Harley in an open boxcar of a moving train for Disney’s 2008 Adam Sandler movie “Bedtime Stories”. In a career of over 25 years Perin has broken “almost everything” including both his arms, legs, knees, feet, ankles, several ribs, his back and his pelvis. See Confessions of a stuntman
Veteran stuntman Evel Knievel (1938 – 2007) was the pioneer of many stunt jumps. Here he is jumping 10 cars and 3 vans in 1973.
His injuries are legendary:
More Evel Knievel
Ramp Design
The angle of the kicker in ramp design can vary from 100 – 700 (See below)
Moto-X Ramp Jump Maths
The Problem?
If the ramp angle is too high, the stunt jumper also goes high, but doesn’t travel very far.
If the ramp angle is too low, the stunt jumper doesn’t stay in the air for very long and therefore doesn’t travel far. (see below0
The stunt jumper wants the OPTIMUM RAMP ANGLE.
……………………………………………………………………………
METHOD 1: TRIGONOMETRY (cos we can)
As any bike nut knows increasing speed at ake off will increase jump distance.
Here is a graph from final gear for speed vs angle to jump 90m.
OPTIMISING RAMP ANGLE
……………………………………………………………………………….
METHOD 2: MORE TRIGONOMETRY
METHOD 1 is approximate (See STEP 1 & STEP 2 above), but as METHOD 2 produces the same ans (See above), it is very useful.
You will find a thoroughly detailed calc for STUNT JUMP MATHS here:
And everything you ever wanted to know about PHYSICS OF STUNT JUMPS here.
Posted in algebra, co - ordinates, geometry, graphs, Middle School, Stuntman Maths, trigonometry | Tagged algebra, angle, bike, calculate, Evel Knieval, Graph, injuries, jump, Method, moto X, motorbike, movie, ramp, speed, stunt, trigonometry, velocity | Leave a Comment »
May 8, 2018
Kilauea erupts in Hawaii MAY 2018.
The amazing maths of volcano eruptions.
Can you out run a lava flow?
In every volcano disaster movie from Volcano (1997) with Tommy Lee Jones to Dante’s Peak (1997) with Pierce Brosnan someone somewhere tries to out run a lava flow.
Is this possible? (See movie cliché busted by maths here.)
Now a lava flow from Hawaii’s Kilauea volcano is threatening tiny town of Pahoa, Hawaii again. (below).
You will find excellent information about the Kilauea and other volcanoes at the
US Geological Survey here.
How to stop lava?
As the temperature of lava exceeds 10000 C there are very few ways to stop lava. According to the Taylor Kate Brown SMH (10 SEPT 2014) options include:
Bombing
Blasting (it with cold water)
Barricading it
Or adding concrete.
What if you are on your own.
Can you out run lava?
Lets do the maths.
Lava from Kilauea travels 17 yards per hour so the lava velocity is:
VL = 17 yds/hour = 15.5 metres /hour
(See Vox.com)
Posted in Junior School, Maths NEWS, Middle School, The Amazing Maths of Volcano Eruptions, units speed, Year 7 mathspig, Year 9 Mathspig | Tagged calculate, Can you out run a lava flow?, Fun, fun math for middle school, Hawaii, how do you stop, Kilauea, lava, Math, mathspig, Middle school, speed, survivor, velocity, volcano | Leave a Comment »
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