Force is Mass x Acceleration.

Now the snake doesn't hit with its whole body so that is going to be tricky right from the start then you need the length of the strike and the final speed of the strike to calculate the Acceleration.

Which is why I just say, "It hit the prey like a ton of bricks". Not that a ton of bricks has any more mass than a ton of anything else.

That is without even considering how much area that total force is spread over

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Force is Mass x Acceleration.

Now the snake doesn't hit with its whole body so that is going to be tricky right from the start then you need the length of the strike and the final speed of the strike to calculate the Acceleration.

Which is why I just say, "It hit the prey like a ton of bricks". Not that a ton of bricks has any more mass than a ton of anything else.

That is without even considering how much area that total force is spread over