Dear Mohamed,

The cone shape you can observe behind moving bodies in surface water is simply due to the combination of a waves being created at different point in space by an object moving faster that the surrounding waves it is creating. Similarly, I believe this can occur in other media and for different types of waves, including air (e.g. Doppler effect). The formation or not of the cone shape simply depends on the relative velocity of the wave source with respect to how fast the waves travel in the media they are propagating. Waves propagate slower in water than in air which may explain why slow moving objects also create cone shape waves at low speeds. 

I believe this is the same principle:  https://en.wikipedia.org/wiki/Doppler_effect

That said, I am far from an expert in this field and you should look for more reliable source. I am sure this is typically explained in text books. 

Hope that helps.

Regards,

Terence 

Dear Mohamed,

The cone shape you can observe behind moving bodies in surface water is simply due to the combination of a waves being created at different point in space by an object moving faster that the surrounding waves it is creating. Similarly, I believe this can occur in other media and for different types of waves, including air (e.g. Doppler effect). The formation or not of the cone shape simply depends on the relative velocity of the wave source with respect to how fast the waves travel in the media they are propagating. Waves propagate slower in water than in air which may explain why slow moving objects also create cone shape waves at low speeds. 

I believe this is the same principle:  https://en.wikipedia.org/wiki/Doppler_effect

That said, I am far from an expert in this field and you should look for more reliable source. I am sure this is typically explained in text books. 

Hope that helps.

Regards,

Terence 

Thank you Terence

This cone is called a wake, see the link. First explained by Lord Kelvin.

https://en.wikipedia.org/wiki/Wake