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Anonymous users2024-02-07Free fall formula s=(1 2)gt (g is the acceleration due to gravity) The higher the drop height, the longer it will take to land.
The motion of a conventional object with zero initial velocity only under the action of gravity is called free fall motion. Free-fall motion is an ideal physical model. (free-fall) is the inertial trajectory of any object under the action of gravity, at least initially, with only gravity as the only force, and it is a uniform acceleration motion with an initial velocity of 0.
Since this definition does not specify the direction of the initial velocity, it also applies to the initial upward movement of the object. Gravity outside the atmosphere due to the case of free fall produces weightlessness, and sometimes any state of weightlessness due to inertial motion is called free fall. This may also apply to weightlessness because the body is away from the gravitational body.
Although the definition of strict technical application does not include moving objects subject to other resistance, such as air resistance, in non-technical usage, there is no parachute or lifting device deployed through the atmosphere, also commonly referred to as a free-fall. Resistance in this case, prevents them from producing a state of complete weightlessness, thus creating a feeling that the weight of the body is supported in an air cushion after the "free fall" of the parachute after reaching the terminal speed.
The motion of free fall is derived from gravity, and the motion of an object falling from a relative rest under the action of gravity alone is called free fall motion (its initial velocity is vo = 0m s), such as the physical phenomenon that occurs after holding an object with your hand and opening it easily under ideal conditions without applying any external force.
The law of free fall motion: vt2 = 2gh (g is the acceleration of gravity, on the earth g ; )
The characteristics of free fall are embodied in the word "freedom", which means:
1) The object is stationary when it starts falling, i.e., the initial velocity v=0. If the initial velocity of the object is not 0, it cannot be considered free fall, even if it falls vertically.
2) In the process of falling, the object is no longer subjected to any other external force (including air resistance) or the net force of the external force is 0 except for the action of gravity.
3) When any object is in free fall at the same height, the falling time is the same.
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Anonymous users2024-02-06No, the drop height is the height of the ground as the reference frame.
The amount of change in the height of the fall, which is the height of the previous moment - the height of the present.
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Anonymous users2024-02-05The velocity of a free fall varies with time and is calculated by the formula v=gt. where g is the acceleration due to gravity.
For, t refers to the time of free fall. Therefore, without considering the air resistance, if the initial velocity of the free fall is in seconds, and then the speed increases every second at any time.
Freefall movement.
Originating from gravity, the motion of an object falling from a relative rest under the action of gravity alone is called free fall motion (its initial velocity is vo = 0 m s), and then the speed increases due to acceleration for every 1 second increase in time. If you don't take into account any resistance, the speed will increase until infinity, but this is only an ideal state.
In fact, when the air is in free fall, the resistance of the air to the falling body gradually increases as the speed of the free fall increases. When the gravitational force experienced by the object is equal to the drag force it is experiencing, the falling body will fall at a uniform speed, and the maximum velocity it has reached at this point is known as the terminal velocity.
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Anonymous users2024-02-04The formula for solving for the height of an object depends on the specific physical context. Here are a few common physical scenarios and the corresponding formulas for solving heights:
1.Free-fall motion: In a self-falling motion with only gravity, the height of an object can be solved using gravitational acceleration and time. The formula is:
h = 1/2) *g * t^2
where h is the height, g is the acceleration due to gravity (usually m s 2), and t is the time.
2.Projectile motion: In projectile motion, the object moves along the angle of the projectile with one initial velocity and is affected by gravity. In the motion of a projectile on a horizontal ground, the formula for calculating the height is:
h = v0^2 * sin^2(θ)2 * g)
where h is the height, v0 is the magnitude of the initial velocity, is the angle of the projectile, and g is the acceleration due to gravity.
3.Vertical throwing motion: In a vertical throwing motion, the object moves only in the vertical direction and is affected by gravity. The formula for calculating the height is:
h = v0^2 * sin^2(θ)2 * g)
where h is the height, v0 is the magnitude of the initial velocity, is the angle of the projectile, and g is the acceleration due to gravity.
It is important to note that there may be other factors to consider in specific applications, such as air resistance. These formulas provide basic calculations, but in real-world problems, it may be necessary to adjust the height appropriately or use a more complex model to solve for the height.
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Anonymous users2024-02-03The speed of descent is only related to the initial velocity, altitude, and air resistance. The speed of descent changes quickly and slowly is related to air resistance.
The descent velocity is only related to the initial velocity, height, and air resistance, which in turn is related to the size and shape of the object, but it should be noted that it has nothing to do with the weight of the object.
The speed of the fall is related to the acceleration, ma=mg, a=g, the falling of the object is the acceleration is equal to g, independent of the mass, the exact acceleration calculation formula: ma=mg-f (resistance).
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Anonymous users2024-02-023. Total free fall motion: The motion in which an object falls from rest in a vacuum only under the action of gravity is called (free fall motion).
The falling height of the free fall motion is 1, h=1 2gt 2 2, h=v 2 2g
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Anonymous users2024-02-01How can there be 16 kinds so many...
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Anonymous users2024-01-31Summary. Hello, please wait.
Hello, please wait.
Hello, this sentence is wrong, the fault is that it has nothing to do with the type of ball, because the height is related to the quality of the ball, that is, the quality of the world calendar ball is different from the spring return group, which is related.
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