Unit of Speed is ‘meters per second’ (m/s). Speed is the rate of change in distance with time. SI unit of Speed is the combination of the standard units of distance and time. The unit of distance is meter (m) and the unit of time is second (s), thus, the SI unit of speed is meters per second (m/s). Speed is the distance covered by an object per unit of time. It is the ratio of the distance covered by the total time taken to cover that distance. Speed is a scalar quantity as it only has direction and no magnitude. The SI Unit of Speed is denoted as m/s or m.s-1. Other units of speed are kilometers per hour, feet per second, miles per
Introduction
Speed is the rate of change of the distance of an object as it travels with respect to time. It is a scalar quantity, which means it only has magnitude and not direction. Speed is measured in meters per second (m/s)
SI Unit of Speed
The standard units of measurement used throughout the world to prevent confusion are known as SI Units. The International System of Units (SI) specifies SI units for every physical quantity.
The SI Unit of Speed is Meters per Second (m/s).
The SI unit of speed is derived from the standard units of Distance (meters) and Time (seconds) and represents how many meters an object can move in a second, for example, if an object moves 10 meters in a second, then the speed of the object will be 10 m/s.
Standard Units
| Parameter | Measuring Unit | Relationship |
|---|---|---|
| Voltage | volt (V or E) | |
| Current | amp (I) | |
| Resistance | ohm (R or Ω) | |
| Conductance | mho (G or ℧) | |
| Power | watt (W) | or |
| Inductance | henry (L or H) | ) |
| Capacitance | farad (C) |
How to Measure Unit of Current
There are many ways to measure the unit of speed. Some of the most common methods include:
- Using a speedometer: A speedometer is a device that measures the speed of a moving object. It is typically found in vehicles, but it can also be used to measure the speed of other objects, such as bicycles or boats
- Using a motion sensor: A motion sensor is a device that detects the movement of an object. It can be used to measure the speed of an object by detecting how long it takes for the object to pass through a certain area
Conversion of Units of Speed
| Units | Conversion |
|---|---|
| Km to Cm | 1 km = 100000 cm |
| Km to M | 1 km = 1000m |
| Cm to m | 1 cm = 0.01m |
| M to mm | 1 m = 1000 mm |
| Cm to mm | 1cm = 10 mm |
| Hour to min | 1 h = 60 min |
| Min to sec | 1 min = 60 sec |
Speed Formula
Speed is the ratio of the distance covered by an object to the time taken to cover that distance. Speed can be calculated using the given formula:
Speed=Distance/Time
Using the appropriate symbols for all the physical quantities, the Speed Formula is expressed as:
V=D/T
- d is the Distance covered by an object measured in meters (m).
- t is the time taken to cover the distance measured in seconds (s).
- v denotes the Speed of an Object measured in m/s.
What is the difference between speed and velocity?
| Parameter | Speed | Velocity |
|---|---|---|
| Definition | The rate of change of the distance of an object as it travels with respect to time. | The speed of an object in a particular direction. |
| Symbol | v | v⃗ |
| Unit of measurement | m/s | m/s or m⋅s^-1 |
| Direction | Not applicable | Yes |
| Example | A car traveling at 60 miles per hour. | A car traveling at 60 miles per hour north. |
Things to Remember
- Speed is the rate at which an object travels over a certain distance.
- Speed is a scalar quantity with only direction and no magnitude.
- It is measured in terms of distance divided by time.
- Speed Formula is given as Speed = Distance/Time.
- The SI unit of Speed is meters per second (m/s).
- The CGS unit of speed is centimeters per second (cm/s).
- The FPS unit of speed is foot per second (ft/s).
- The speed of vehicles is always measured in terms of Kilometers per hour (kmph) or miles per hour (mph).
FAQs
The SI unit of speed is meter per second (m/s). This means that the speed of an object is measured in meters traveled per second.
The SI unit of speed is defined as the distance traveled by light in a vacuum in 1/299,792,458 seconds.
- Kilometers per hour (km/h)
- Miles per hour (mph)
- Feet per second (ft/s)
- Knots (kn)
km/h = m/s × 3.6
