Casio fx-991EX and fx-115ES Plus: Velocity Conversions
The Casio fx-991EX Classwiz and Casio fx-115ES Plus calculators, among others, have 40 conversions in various areas.
Keystrokes
Keystrokes: Casio fx-115ES Plus
[ SHIFT ] [ 8 ], enter the required two digit code
The conversions we'll be working with this blog entry:
ft → m, 03
m → ft, 04
yd → m, 05
m → yd, 06
mile → km, 07
km → mile, 08
km/hr → m/s, 19
m/s → km/hr, 20
Keystrokes: Casio fx-991EX Classwiz
[ SHIFT ] [ 8 ]. The conversions will be grouped by category (length, area, volume, etc).
ft → m, 1, 3
m → ft, 1, 4
yd → m, 1,5
m → yd, 1,6
mile → km, 1, 7
km → mile, 1, 8
km/hr → m/s, ↓, 1, 1
m/s → km/hr, ↓, 1, 2
km/hr (kilometers per hour) vs mph (miles per hour)
The calculators mentioned does not have a direct conversion between km/hr and mph. However, because the time frame is the same (per hour), we can use the km/mile conversions (since 1 hour = 1 hour and no time conversion part is required, only the length).
Example 1: 150 km/hr to mph
150 km>mile returns 93.20567884
150 km/hr = 9320567884 mph
Example 2: 65 mph to km/hr
65 mile>km = 104.60736
65 mph = 104.60736 km/hr
More Examples
Example 3: 5.8 ft/s to m/s
Again, since the time portion is the same (second to second), we only have to worry about length.
5.8 ft>m returns 1.76784
5.8 ft/s = 1.76784 m/s
Example 4: 110 ft/s to km/hr
Now we are converting both length and time. There are no direct time conversions on the calculators featured, so we have to use the manual conversion.
Remember that 1 hr = 3600 s and 1 km = 1000 m. To convert from m to km, divide by 1000 and to convert from 1/s to 1/hr, multiply by 3600 (note: 1/s to 1/hr)
(110 ft>m) ÷ 1000 × 3600 returns 120.7008
110 ft/s = 120.7008 km/hr
Example 5: 40 m/s to km/hr
Here is another example where we both have to convert the length (m to km) and time component (1/s to 1/hr). This is similar to the Example 3. However, the Casio calculators featured on this blog has conversions between m/s and km/hr (velocity section).
40 m/s>kh/hr returns 144 km/hr
40 m/s = 144 km/hr
Example 6: 100 ft^2 to m^2
The calculators have two area conversions (acre/m^2). However, we can use the same length conversion twice to make other areas.
100 ft>m ft>m returns 9.290304
100 ft^2 = 9.290304 m^2
Example 7: 1 mi to yd by using the conversions available
(1 mi>km × 1000) m>yd returned 1760
(1 km = 1000 m)
1 mi = 1760 yd
A Cautionary Tale
Example 8: 1 acre to ft^2
1 acre>m^2 m>ft m>ft returns 43559.99545
However, as defined, 1 acre = 43560 ft^2.
Lesson: use caution when chaining conversions, 100% accuracy isn't guaranteed.
Eddie
All original content copyright, © 2011-2020. Edward Shore. Unauthorized use and/or unauthorized distribution for commercial purposes without express and written permission from the author is strictly prohibited. This blog entry may be distributed for noncommercial purposes, provided that full credit is given to the author
The Casio fx-991EX Classwiz and Casio fx-115ES Plus calculators, among others, have 40 conversions in various areas.
Keystrokes
Keystrokes: Casio fx-115ES Plus
[ SHIFT ] [ 8 ], enter the required two digit code
The conversions we'll be working with this blog entry:
ft → m, 03
m → ft, 04
yd → m, 05
m → yd, 06
mile → km, 07
km → mile, 08
km/hr → m/s, 19
m/s → km/hr, 20
Keystrokes: Casio fx-991EX Classwiz
[ SHIFT ] [ 8 ]. The conversions will be grouped by category (length, area, volume, etc).
ft → m, 1, 3
m → ft, 1, 4
yd → m, 1,5
m → yd, 1,6
mile → km, 1, 7
km → mile, 1, 8
km/hr → m/s, ↓, 1, 1
m/s → km/hr, ↓, 1, 2
km/hr (kilometers per hour) vs mph (miles per hour)
The calculators mentioned does not have a direct conversion between km/hr and mph. However, because the time frame is the same (per hour), we can use the km/mile conversions (since 1 hour = 1 hour and no time conversion part is required, only the length).
Example 1: 150 km/hr to mph
150 km>mile returns 93.20567884
150 km/hr = 9320567884 mph
Example 2: 65 mph to km/hr
65 mile>km = 104.60736
65 mph = 104.60736 km/hr
More Examples
Example 3: 5.8 ft/s to m/s
Again, since the time portion is the same (second to second), we only have to worry about length.
5.8 ft>m returns 1.76784
5.8 ft/s = 1.76784 m/s
Example 4: 110 ft/s to km/hr
Now we are converting both length and time. There are no direct time conversions on the calculators featured, so we have to use the manual conversion.
Remember that 1 hr = 3600 s and 1 km = 1000 m. To convert from m to km, divide by 1000 and to convert from 1/s to 1/hr, multiply by 3600 (note: 1/s to 1/hr)
(110 ft>m) ÷ 1000 × 3600 returns 120.7008
110 ft/s = 120.7008 km/hr
Example 5: 40 m/s to km/hr
Here is another example where we both have to convert the length (m to km) and time component (1/s to 1/hr). This is similar to the Example 3. However, the Casio calculators featured on this blog has conversions between m/s and km/hr (velocity section).
40 m/s>kh/hr returns 144 km/hr
40 m/s = 144 km/hr
Example 6: 100 ft^2 to m^2
The calculators have two area conversions (acre/m^2). However, we can use the same length conversion twice to make other areas.
100 ft>m ft>m returns 9.290304
100 ft^2 = 9.290304 m^2
Example 7: 1 mi to yd by using the conversions available
(1 mi>km × 1000) m>yd returned 1760
(1 km = 1000 m)
1 mi = 1760 yd
A Cautionary Tale
Example 8: 1 acre to ft^2
1 acre>m^2 m>ft m>ft returns 43559.99545
However, as defined, 1 acre = 43560 ft^2.
Lesson: use caution when chaining conversions, 100% accuracy isn't guaranteed.
Eddie
All original content copyright, © 2011-2020. Edward Shore. Unauthorized use and/or unauthorized distribution for commercial purposes without express and written permission from the author is strictly prohibited. This blog entry may be distributed for noncommercial purposes, provided that full credit is given to the author
