Question

100 БАЛІВ!!! Якщо перестати гребсти веслами човен швидко зупиняється ,чому ?навіщо спортивні човни полірують?

Answer 1

Why does a boat stop quickly when you stop rowing?

When you stop rowing, a boat stops quickly because of the principle of inertia. Inertia is the tendency of an object to resist changes in its motion. When you row a boat, you apply a force to move it forward. This force propels the boat and gives it momentum. However, when you stop rowing, there is no longer a force pushing the boat forward, and the boat's momentum causes it to slow down and eventually come to a stop.

The amount of time it takes for a boat to stop after you stop rowing depends on various factors, such as the boat's mass, the speed at which it was moving, and the resistance of the water. Heavier boats with more momentum will take longer to stop compared to lighter boats. Additionally, if the boat is moving at a higher speed, it will take longer to come to a stop.

Why do sport boats get polished?

Sport boats are often polished for several reasons:

1. Aesthetics: Polishing a boat enhances its appearance by giving it a glossy and reflective surface. This can make the boat look more attractive and appealing.

2. Protection: Polishing helps protect the boat's surface from damage caused by exposure to the elements, such as UV rays, saltwater, and pollutants. The polish forms a protective layer that can prevent oxidation, fading, and corrosion.

3. Performance: A polished boat can have improved hydrodynamics, reducing drag and increasing speed. The smooth surface reduces friction with the water, allowing the boat to glide more efficiently.

4. Maintenance: Polishing can make it easier to clean and maintain the boat. The smooth surface is less likely to accumulate dirt, grime, and stains, making it easier to keep the boat looking clean.

It's important to note that different types of boats may require different polishing techniques and products. It's recommended to follow the manufacturer's guidelines or seek professional advice when polishing a boat to ensure the best results.

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