Because the knees allow for cushion for the impact. If the person kept their legs straight, there would be no cushioning, and the upper and lower leg bones would be forced into each other at the joint and possibly break. The upper leg bone can even be pushed into the hip bone the same way.
Your posture is the answer
Ice will break rather then bend
when you crack your fingers, your fingers can't bend when you're older.
In dentistry, a million dollar bend in an Adams clasp refers to a specific bend made in the clasp arm to provide additional retention and stability for a removable dental prosthesis. This bend is typically made at a 45-degree angle towards the occlusal surface of the tooth, creating a more secure grip on the abutment tooth. The term "million dollar bend" emphasizes the importance of this precise adjustment in ensuring the longevity and effectiveness of the clasp assembly.
Water is released suddenly from the tank and floods into the bowl. This will then flow over the S bend and down the drain. There are some differences in bowl and S bend design, but most are basically similar.
The bend in the road prevented them from seeing the blockade. The wind caused the tree to bend to the ground.
When someone jumps, they are using their muscle energy to push off the ground and propel themselves into the air. This kinetic energy is converted from the potential energy stored in their muscles when they bend their legs before jumping.
Should anyone bend the rules and advance their career.
the answer is.... if u dont bend ur knees wen u jumb your bones will jar. u should bend your knees to obsorb the shock of the ast movement ok!!! ouchh
depends on how tall you are. basically it should be high enough to where you the worker does not need to bend over from the waist straining your back nor should you should you have to reach too high stressing your shoulders.
slowest,causes the ground to twist and bend.
You bend down and then you push up from your thighs.
Big Bend National Park has four species of squirrels -- the Rock Squirrel, the Texas Antelope Squirrel, the Mexican Ground Squirrel (rare), and the Spotted Ground Squirrel.
When you use a trampoline, you keep your legs mostly straight, and the energy of your landing is absorbed by the trampoline. When you jump on the ground, you bend your legs and they absorb the energy of your landing. If you jump down after using the trampoline, you may forget to bend your legs, and do yourself serious harm
bend your knees, and jump off the ground as high as you can
When squatting, your knees should not bend past a 90-degree angle to prevent strain and injury.
The word crouch means to bend down at the knees and take a squatting position.To crouch down means to bend at the knees and stay low to the ground.