A "White" colored light must be shown by a 14-foot boat that is operating under oars after it is dark, in order to prevent a collision.
Boats that are less than 23 feet cannot exceed a maximum speed of 7 knots. They need to exhibit an all-round white light when it is sailing in the dark.
There are 3 lights (white, green, and red) that a boat uses during sailing. Every single light color as well as each combination of 2 or more lights has a specific meaning. All boats abide by the same color code worldwide.
The other practicable sidelights can also be used instead of the white lights when they are sailing in international waters.
Collision, also called impact, in physics, is the sudden, forceful coming together in direct contact of two bodies, such as, for example, two billiard balls, a golf club, and a ball, a hammer and a nail head, two railroad cars when being coupled together, or a falling object and a floor.
There are two general types of collisions in physics: elastic and inelastic. An inelastic collision occurs when two objects collide and do not bounce away from each other. Momentum is conserved because the total momentum of both objects before and after the collision is the same.
In a collision, there is a force on both objects that causes an acceleration of both objects; the forces are equal in magnitude and opposite in direction. For collisions between equal-mass objects, each object experiences the same acceleration.
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