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  2. Newton (unit) - Wikipedia

    en.wikipedia.org/wiki/Newton_(unit)

    Imperial units. 0.224809 lbf. The newton (symbol: N) is the unit of force in the International System of Units (SI). It is defined as , the force which gives a mass of 1 kilogram an acceleration of 1 metre per second squared. It is named after Isaac Newton in recognition of his work on classical mechanics, specifically his second law of motion.

  3. Metre per second squared - Wikipedia

    en.wikipedia.org/wiki/Metre_per_second_squared

    acceleration. Symbol. m / s 2⁠. The metre per second squared is the unit of acceleration in the International System of Units (SI). As a derived unit, it is composed from the SI base units of length, the metre, and time, the second. Its symbol is written in several forms as m/s2, m·s−2 or ms−2, , or less commonly, as (m/s)/s.

  4. Newton-second - Wikipedia

    en.wikipedia.org/wiki/Newton-second

    The newton-second (also newton second; symbol: N⋅s or N s) [1] is the unit of impulse in the International System of Units (SI). It is dimensionally equivalent to the momentum unit kilogram-metre per second (kg⋅m/s). One newton-second corresponds to a one- newton force applied for one second. It can be used to identify the resultant ...

  5. Gravitational constant - Wikipedia

    en.wikipedia.org/wiki/Gravitational_constant

    The measured value of the constant is known with some certainty to four significant digits. In SI units, its value is approximately 6.6743 × 10 −11 N⋅m 2 /kg 2. [1] The modern notation of Newton's law involving G was introduced in the 1890s by C. V. Boys.

  6. MKS units - Wikipedia

    en.wikipedia.org/wiki/Mks_units

    The metre, kilogram, second system of units, also known more briefly as MKS units or the MKS system, [1][2][3] is a physical system of measurement based on the metre, kilogram, and second (MKS) as base units. Distances are described in terms of metres, mass in terms of kilograms and time in seconds. Derived units are defined using the ...

  7. Time in physics - Wikipedia

    en.wikipedia.org/wiki/Time_in_physics

    In the International System of Units (SI), the unit of time is the second (symbol: s). It has been defined since 1967 as "the duration of 9192631770 periods of the radiation corresponding to the transition between the two hyperfine levels of the ground state of the caesium 133 atom", and is an SI base unit. [ 12 ]

  8. Natural units - Wikipedia

    en.wikipedia.org/wiki/Natural_units

    In physics, natural unit systems are measurement systems for which selected physical constants have been set to 1 through nondimensionalization of physical units.For example, the speed of light c may be set to 1, and it may then be omitted, equating mass and energy directly E = m rather than using c as a conversion factor in the typical mass–energy equivalence equation E = mc 2.

  9. List of physical quantities - Wikipedia

    en.wikipedia.org/wiki/List_of_physical_quantities

    v →: Moved distance per unit time: the first time derivative of position m/s L T −1: vector Wavevector: k →: Repetency or spatial frequency vector: the number of cycles per unit distance m −1: L −1: vector Weight: w: Gravitational force on an object newton (N = kg⋅m/s 2) L M T −2: vector