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  2. List of common physics notations - Wikipedia

    en.wikipedia.org/wiki/List_of_common_physics...

    Cartesian y-axis basis unit vector unitless kinetic energy: joule (J) wave vector: radian per meter (m −1) Boltzmann constant: joule per kelvin (J/K) wavenumber: radian per meter (m −1) stiffness: newton per meter (N⋅m −1) ^ Cartesian z-axis basis unit vector

  3. Radial velocity - Wikipedia

    en.wikipedia.org/wiki/Radial_Velocity

    [6] Diagram showing how an exoplanet's orbit changes the position and velocity of a star as they orbit a common center of mass. In many binary stars, the orbital motion usually causes radial velocity variations of several kilometres per second (km/s). As the spectra of these stars vary due to the Doppler effect, they are called spectroscopic ...

  4. Maneuverable reentry vehicle - Wikipedia

    en.wikipedia.org/wiki/Maneuverable_reentry_vehicle

    AMaRV had an entry mass of approximately 470 kg, a nose radius of 2.34 cm, a forward frustum half-angle of 10.4°, an inter-frustum radius of 14.6 cm, aft frustum half angle of 6°, and an axial length of 2.079 meters. The design was essentially a conical RV with a slice cut off one side to form a flat surface.

  5. Fourth, fifth, and sixth derivatives of position - Wikipedia

    en.wikipedia.org/wiki/Fourth,_fifth,_and_sixth...

    Snap, [6] or jounce, [2] is the fourth derivative of the position vector with respect to time, or the rate of change of the jerk with respect to time. [4] Equivalently, it is the second derivative of acceleration or the third derivative of velocity, and is defined by any of the following equivalent expressions: = ȷ = = =.

  6. Recreational vehicle terms - Wikipedia

    en.wikipedia.org/wiki/Recreational_vehicle_terms

    The term recreational vehicle (RV) is often used as a broad category of motor vehicles and trailers which include living quarters for designed temporary accommodation. [1] Types of RVs include motorhomes, campervans, caravans (also known as travel trailers and camper trailers), fifth-wheel trailers, popup campers, truck campers and Park Model RVs.

  7. List of physical quantities - Wikipedia

    en.wikipedia.org/wiki/List_of_physical_quantities

    Magnetic flux generated per unit current through a circuit henry (H) L 2 M T −2 I −2: scalar Irradiance: E: Electromagnetic radiation power per unit surface area W/m 2: M T −3: intensive Intensity: I: Power per unit cross sectional area W/m 2: M T −3: intensive Linear density: ρ l: Mass per unit length kg⋅m −1: L −1 M: Luminous ...

  8. Recreational vehicle - Wikipedia

    en.wikipedia.org/wiki/Recreational_vehicle

    An example of a Class C recreational vehicle, recognisable by the extension of the cabin over the cab Motor home Map symbol used by the US NPS to indicate an RV campground. A recreational vehicle, often abbreviated as RV, is a motor vehicle or trailer that includes living quarters designed for accommodation. [1]

  9. Relative velocity - Wikipedia

    en.wikipedia.org/wiki/Relative_velocity

    Relative velocities between two particles in classical mechanics. The figure shows two objects A and B moving at constant velocity. The equations of motion are: = +, = +, where the subscript i refers to the initial displacement (at time t equal to zero).