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  2. Velocity - Wikipedia

    en.wikipedia.org/wiki/Velocity

    Velocity is the speed in combination with the direction of motion of an object. Velocity is a fundamental concept in kinematics, ... For example, "5 metres per second ...

  3. Equations of motion - Wikipedia

    en.wikipedia.org/wiki/Equations_of_motion

    Trajectory of a particle with initial position vector r 0 and velocity v 0, subject to constant acceleration a, all three quantities in any direction, and the position r(t) and velocity v(t) after time t. The initial position, initial velocity, and acceleration vectors need not be collinear, and the equations of motion take an almost identical ...

  4. Linear motion - Wikipedia

    en.wikipedia.org/wiki/Linear_motion

    An example of linear motion is an athlete running a 100-meter dash ... If is the initial position of an object and is the ... Velocity is a vector quantity ...

  5. Simple harmonic motion - Wikipedia

    en.wikipedia.org/wiki/Simple_harmonic_motion

    In the solution, c 1 and c 2 are two constants determined by the initial conditions (specifically, the initial position at time t = 0 is c 1, while the initial velocity is c 2 ω), and the origin is set to be the equilibrium position.

  6. Projectile motion - Wikipedia

    en.wikipedia.org/wiki/Projectile_motion

    where is the initial velocity, is the launch angle and is the acceleration due to gravity as a positive value. The expression can be obtained by evaluating the arc length integral for the height-distance parabola between the bounds initial and final displacement (i.e. between 0 and the horizontal range of the projectile) such that:

  7. Navier–Stokes existence and smoothness - Wikipedia

    en.wikipedia.org/wiki/Navier–Stokes_existence...

    Prove or give a counter-example of the following statement: In three space dimensions and time, given an initial velocity field, there exists a vector velocity and a scalar pressure field, which are both smooth and globally defined, that solve the Navier–Stokes equations.

  8. Trajectory - Wikipedia

    en.wikipedia.org/wiki/Trajectory

    The initial velocity, v i, is the speed at which said object is launched from the point of origin. ... An example showing how to calculate bullet trajectory.

  9. Pendulum (mechanics) - Wikipedia

    en.wikipedia.org/wiki/Pendulum_(mechanics)

    The animations below depict the motion of a simple (frictionless) pendulum with increasing amounts of initial displacement of the bob, or equivalently increasing initial velocity. The small graph above each pendulum is the corresponding phase plane diagram; the horizontal axis is displacement and the vertical axis is velocity. With a large ...