def random(min=-1, max=1):
"""Return a random force."""
vector = Vector.random(min, max)
return Force(vector)
def random(min=-1, max=1):
"""Create a random motion using optional minimum and maximum."""
position = Vector.random(min, max)
velocity = Vector.random(min, max)
acceleration = Vector.random(min, max)
return Motion(position, velocity, acceleration)