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Phys_Boi
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If you fall off of a chair you don't get hurt, however, if you fall off of a building you die. How is this possible if you are experiencing the same force..
F=mg
F=mg
Okay! So how do you know the time from the initial velocity and 0 velocity?DrClaude said:As the old joke goes, it is not falling down that hurts, it when you stop falling!
The force that will hurt you is the one due to the deceleration, (negative acceleration) when you suddenly stop. The faster you were going, the greater the deceleration.
There is no easy way to calculate that. It depends on so many things, like the softness of the ground and how much deformation you can sustain before breaking. But generally speaking, you can consider that the stopping time is about the same in all cases, and therefore that the higher the velocity, the stronger the force.Phys_Boi said:Okay! So how do you know the time from the initial velocity and 0 velocity?
When an object hits the ground, it experiences a force called impact force. This force depends on the mass and velocity of the object, as well as the type of surface it hits. The impact force causes the object to deform and/or bounce back.
The height of an object affects the impact force in two ways: 1) a higher object will have a greater potential energy, resulting in a larger impact force when it hits the ground, and 2) a higher object will have a longer distance to decelerate, resulting in a longer impact duration and potentially a larger impact force.
Objects bounce when they hit the ground because the impact force causes them to deform. As they deform, they store potential energy in the form of elastic potential energy. When the object regains its original shape, this energy is released, causing the object to bounce back.
The impact force when an object hits the ground is affected by several factors, including the mass and velocity of the object, the height from which it falls, the type of surface it hits, and the shape and composition of the object.
No, an object cannot hit the ground without experiencing any impact force. Even if the object falls from a small height, it will still experience some impact force due to its mass and velocity. However, the impact force may be small enough to not cause any noticeable deformation or bouncing of the object.