def mps_to_kmh(mps):
    """Convert meters per second to kilometers per hour."""
    return mps * 3.6


def kmh_to_mps(kmh):
    """Convert kilometers per hour to meters per second."""
    return kmh / 3.6


def mps_to_mph(mps):
    """Convert meters per second to miles per hour."""
    return mps * 2.2369362920544


def mph_to_mps(mph):
    """Convert miles per hour to meters per second."""
    return mph / 2.2369362920544


def mps_to_knots(mps):
    """Convert meters per second to knots."""
    return mps * 1.9438444924406


def knots_to_mps(knots):
    """Convert knots to meters per second."""
    return knots / 1.9438444924406
