It is a derived unit. It measure distance traveled per unit of time. For example meter per second or m/s. Speed or velocity as it is sometimes called is derived from the units for distance and time.
Of course, velocity is a derived quantity. By definition, velocity is time rate of change of velocity. ie, Velocity = Displacement (s) / Time (t), where S and t are fundamental quantities. Hence velocity is a derived quantity.
Velocity is a derived quantity. Speed is velocity without direction. Velocity is derived from distance and time.
The International System of Units (SI) has two type of units, base units and derived units. Speed is a derived unit. Its unit is Meter/sec. Its a scalar quantity.
It means that it is defined on the basis of other units. For example, in the SI, the meter and the second are two of the seven "base units"; the unit for area is the square meter (meter x meter), so it is a DERIVED unit; so is the unit for speed, meters / second.
There are 7 base SI units and all other are defined using these 7 base units. See the related question below:[http://wiki.answers.com/Q/What_are_all_the_SI_unitsWhat are all SI units?]
Derived Unit
By unit of length and distance and conversion ,we can say that SI basic unit of length is meters.
The basic unit is meter. Centimeter and the cubic value are derived from the basic meter.AnswerIt isn't. It's a submultiple of a 'base unit'.
The International System of Units (SI) has two type of units, base units and derived units. Speed is a derived unit. Its unit is Meter/sec. Its a scalar quantity.
They are used to measure quantities that are not basic. Length, for example, is a basic unit, but area and volume are not so derived units will be used to measure area and volume.
The speed of light, abbreviated as "c", is a fundamental constant. It is 299,792,458 meters per second, and the length of the meter is DEFINED AS being 1/299,792,458th of the distance that light travels in one second. So it is a "basic unit". We generally use 300,000 km/second or 186,000 miles per second as "close enough" approximations of the speed of light.
The SI derived unit for speed is meter per second, m/s. The English standard unit for speed is feet per second, ft/s.
The kilogram is the SI unit for mass.But grams are also often used.Additional AnswerIn SI, there are 'base' (not 'basic') units and 'derived' units -which, as the name suggests, are derived from the base units. There are seven base units, including the kilogram (not the gram) for mass.The SI unit for weight, which is the force due to gravity, is the newton, which is a derived unit.
metre per sec
They are used to measure quantities that are not basic. Length, for example, is a basic unit, but area and volume are not so derived units will be used to measure area and volume.
No.* Mass is measured in kilograms. * Volume is measured in cubic meters (which is not a base unit, but a derived unit).
Newton, the unit of force, is defined based on Newton's Second Law (F=ma), as the force required to give a mass of one kilogram an acceleration of 1 meter/second2. Thus, it is derived from these other units.
Derived units are simply more complex because they are made up of several (that is, usually, by more than one) base unit. It is just the way they are defined; for example, in the SI, distance and time are base units, while speed is a derived unit (distance / time). You can just as well invent a system of units where - for example - time and speed are base units; in this case, distance would be a derived unit.
The basic SI unit is for length. Volume is a measure which is based on length-cubed and so it is a derived (not complex) unit.