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Feet per second (ft/s) to Kilometres per hour (km/h) conversion

Feet per second to Kilometres per hour conversion table

Feet per second (ft/s)Kilometres per hour (km/h)
00
11.097279707392
22.194559414784
33.291839122176
44.389118829568
55.48639853696
66.583678244352
77.680957951744
88.778237659136
99.875517366528
1010.97279707392
2021.94559414784
3032.91839122176
4043.89118829568
5054.8639853696
6065.83678244352
7076.80957951744
8087.78237659136
9098.75517366528
100109.7279707392
10001097.279707392

How to convert feet per second to kilometres per hour?

Converting between feet per second (fps) and kilometers per hour (km/h) involves understanding the relationships between these units of speed. Here's a breakdown of the conversion process, some context, and examples.

Understanding the Conversion Factors

The core of the conversion lies in knowing how feet relate to kilometers and seconds relate to hours.

  • 1 foot = 0.0003048 kilometers
  • 1 hour = 3600 seconds

Thus, we can use these factors to convert between the units.

Converting Feet per Second to Kilometers per Hour

Here's how to convert feet per second (fps) to kilometers per hour (km/h):

  1. Start with feet per second (fps).
  2. Convert feet to kilometers: Multiply by 0.0003048, since 1 foot=0.0003048 km1 \text{ foot} = 0.0003048 \text{ km}.
  3. Convert seconds to hours: Multiply by 3600, since 1 second=13600 hours1 \text{ second} = \frac{1}{3600} \text{ hours}.

Combining these steps, the conversion formula is:

km/h=fps×0.0003048×3600\text{km/h} = \text{fps} \times 0.0003048 \times 3600

Which simplifies to:

km/h=fps×1.09728\text{km/h} = \text{fps} \times 1.09728

Example: Convert 1 foot per second to kilometers per hour.

1 fps=1×1.09728 km/h=1.09728 km/h1 \text{ fps} = 1 \times 1.09728 \text{ km/h} = 1.09728 \text{ km/h}

Therefore, 1 foot per second is approximately 1.09728 kilometers per hour.

Converting Kilometers per Hour to Feet per Second

To convert kilometers per hour (km/h) to feet per second (fps), we reverse the process:

  1. Start with kilometers per hour (km/h).
  2. Convert kilometers to feet: Divide by 0.0003048, since 1 km=10.0003048 feet1 \text{ km} = \frac{1}{0.0003048} \text{ feet}.
  3. Convert hours to seconds: Divide by 3600, since 1 hour=3600 seconds1 \text{ hour} = 3600 \text{ seconds}.

Combining these steps, the conversion formula is:

fps=km/h0.0003048×3600\text{fps} = \frac{\text{km/h}}{0.0003048 \times 3600}

Which simplifies to:

fps=km/h1.09728\text{fps} = \frac{\text{km/h}}{1.09728}

Or:

fps=km/h×0.911344\text{fps} = \text{km/h} \times 0.911344

Example: Convert 1 kilometer per hour to feet per second.

1 km/h=1×0.911344 fps=0.911344 fps1 \text{ km/h} = 1 \times 0.911344 \text{ fps} = 0.911344 \text{ fps}

Therefore, 1 kilometer per hour is approximately 0.911344 feet per second.

Interesting Facts and Associations

While there's no specific "law" directly associated with this particular unit conversion, the concept of speed and its measurement is fundamental in physics. Galileo Galilei was one of the first to accurately measure speed and velocity, laying the groundwork for classical mechanics. His experiments with motion and gravity involved measuring distances and times, which are the basis for understanding speed.

Real-World Examples

  1. Wind Speed: Weather reports might provide wind speeds in both km/h and fps, especially in regions where both metric and imperial systems are common.

    • Example: A gentle breeze might be 5 km/h, which is approximately 4.56 fps.

  2. Vehicle Speed: Converting vehicle speed to different units.

    • Example: A car traveling at 30 fps is moving at approximately 32.92 km/h.

  3. Sports: In sports like track and field, the speed of athletes can be measured and converted between these units for comparison or analysis.

    • Example: A runner sprinting at 10 m/s (approximately 32.8 fps) is running at about 35.9 km/h.

  4. Fluid Dynamics: In engineering applications, fluid flow rates can be measured in fps and converted to km/h for analysis of large-scale systems.

    • Example: Water flowing in a large pipe at 2 fps is moving at approximately 2.19 km/h.

See below section for step by step unit conversion with formulas and explanations. Please refer to the table below for a list of all the Kilometres per hour to other unit conversions.

What is Feet per Second?

Feet per second (fps) is a unit of speed expressing the distance in feet traveled per second. It's commonly used in various fields, including sports, engineering, and meteorology, to quantify how fast an object is moving.

Formation of Feet per Second

Feet per second is derived from two fundamental units:

  • Feet (ft): A unit of length in the imperial and US customary systems.
  • Second (s): The base unit of time in the International System of Units (SI).

The unit is formed by dividing a distance measured in feet by a time measured in seconds:

Speed=Distance (ft)Time (s)\text{Speed} = \frac{\text{Distance (ft)}}{\text{Time (s)}}

Real-World Examples and Applications

  • Sports: A baseball pitch can reach speeds of 90-100 mph, which is approximately 132-147 fps.
  • Meteorology: Wind speed is often measured in feet per second, especially in aviation and weather forecasting. For example, a moderate breeze might be around 15-20 fps.
  • Engineering: Calculating the speed of a vehicle or fluid flow in a pipe. For instance, water flowing through a pipe at 10 fps.
  • Ballistics: Measuring the muzzle velocity of a bullet, which can range from 800 fps to over 3000 fps depending on the firearm and ammunition.

Relationship to Other Speed Units

Feet per second can be converted to other common units of speed using the following relationships:

  • Miles per hour (mph): 1 fps ≈ 0.681818 mph
  • Meters per second (m/s): 1 fps ≈ 0.3048 m/s
  • Kilometers per hour (km/h): 1 fps ≈ 1.09728 km/h

Notable Associations and Facts

While there isn't a specific law or person directly associated with the invention or formalization of feet per second, its usage is deeply ingrained in fields that involve motion and speed measurements.

  • Galileo Galilei: His work on motion and free fall laid the groundwork for understanding speed and acceleration, though he didn't use the modern unit of feet per second.
  • Speed of Sound: At sea level and 20°C, the speed of sound is approximately 1125 fps. This is a critical value in acoustics and aerodynamics. Read more about speed of sound from NASA Glenn Research Center.

Quick Conversions

Here are some common speeds converted to feet per second:

  • 30 mph ≈ 44 fps
  • 60 mph ≈ 88 fps
  • 100 mph ≈ 146.67 fps

What is Kilometres per hour?

Kilometres per hour (km/h) is a unit of speed, expressing the number of kilometres travelled in one hour. It is a commonly used unit for measuring the speed of vehicles and wind speeds.

Definition and Formation

Kilometres per hour is a derived unit, formed by combining the units of distance (kilometres) and time (hours).

  • Kilometre (km): A unit of length in the metric system, equal to 1000 meters.
  • Hour (h): A unit of time, equal to 60 minutes or 3600 seconds.

Therefore, 1 km/h means travelling a distance of 1 kilometre in a time of 1 hour.

Conversion to Other Units

Kilometres per hour can be converted to other commonly used units of speed:

  • Meters per second (m/s): To convert from km/h to m/s, divide by 3.6.

    m/s=km/h3.6\text{m/s} = \frac{\text{km/h}}{3.6}

  • Miles per hour (mph): To convert from km/h to mph, divide by 1.60934.

    mph=km/h1.60934\text{mph} = \frac{\text{km/h}}{1.60934}

Significance and Applications

  • Speedometers: Most cars, motorcycles, and other vehicles display speed in km/h in countries that use the metric system.
  • Weather Reports: Wind speeds are often reported in km/h, especially in regions adhering to metric standards.
  • Sports: The speed of a runner or cyclist might be measured in km/h during a race.

Interesting Facts and Associations

While no specific scientific "law" is directly tied to km/h, understanding speed and its measurement has been crucial to many scientific advancements. One notable association involves the development of radar technology.

  • Radar Speed Guns: Radar technology, initially developed for military applications, is now commonly used by law enforcement to measure the speed of vehicles in km/h (or mph in some regions). These devices utilize the Doppler effect to determine the speed of a moving object. Learn more about Radar Speed Guns.

Real-World Examples

Here are some examples illustrating different speeds in km/h:

  • Walking Speed: A brisk walking speed is typically around 5 km/h.
  • City Driving: Speed limits in urban areas often range from 30-50 km/h.
  • Highway Driving: Highway speed limits can range from 80-130 km/h, depending on the country.
  • High-Speed Train: Some high-speed trains can travel at speeds exceeding 300 km/h.
  • Commercial Airliner: Cruising speeds for commercial airplanes are around 800-900 km/h.

Understanding km/h provides a practical way to gauge the rate at which objects are moving, contributing to safety and awareness in various everyday situations.

Complete Feet per second conversion table

Enter # of Feet per second
Convert 1 ft/s to other unitsResult
Feet per second to Metres per second (ft/s to m/s)0.30479991872
Feet per second to Kilometres per hour (ft/s to km/h)1.097279707392
Feet per second to Millimeters per hour (ft/s to mm/h)1097279.707392
Feet per second to Miles per hour (ft/s to mph)0.681818
Feet per second to Knots (ft/s to knot)0.5924838739671
Feet per second to Feet per minute (ft/s to ft/min)60.000176000563
Feet per second to Inches per hour (ft/s to in/h)43207.73130545

Speed conversions