I am going to call shenenigans. The laws of physics do _not_ apply to the world of Naruto.

1.Regardless of whether or not chakra enables people to jump super-high, they still have to deal with the landing. The impact of a 1 meter fall has about the same kinetic energy as a bullet. Granted, it is spead over a somewhat larger area (your feet), however if it was 20x that amount (which most of these people seem to be capable), serious injury would occur even if the landing was executed perfectly.

2. Huge snakes, animals, bugs, the choji guy, etc... The snakes are proportional lengthwise to a normal snake, and are say, scaled 100x. The length goes from 2 meters to 200 meters. The snake's strength is increased by 100 squared, or 10000. However, the weight of the snake is increased with the cube of the scaling factor. So, the weight increases by 100 cubed, or a million. The weight increases 100x more than the strength, and a huge snake, frog, slug, centipede, etc. would not be even able to lift itself off the ground, and of course not be able to jump 5 km in the air.

3. I don't think I even need to explain the part where Naruto falls off a cliff, and gamabunta is summoned and naruto lands on him and survives. According to the laws of physics, landing even in water, a huge foam pit, or any other surface would yield the same result as landing on concrete - you would die.



The list goes on and on.