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It would be the same speed as it would be on a very still day on earth without any wind. Wind creates resistance which sends the ball in different directions on serves and returns. On the moon, since there is no atmosphere there is no wind and the ball would go where ever you hit it without any effect from resistance. So trying to get a good serve in will be hard since the ball won't be as tricky to hit back.
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Why a helicopter falling during auto-rotation could reach a terminal speed without the pilot changing any controls?
The helicopter begins to fall because gravity is pulling its weight. As the helicopter accelerates, the air passing past the helicopter creates drag, as the helicopter continues to accelerate the drag Increases until the drag becomes equal to the weight, stopping it from accelerating. Even if the helicopter did not auto rotate it would still reach a terminal speed, however the terminal speed for the non auto rotating helicopter would be a lot higher and the helicopter would take longer to reach this speed.
Why can a helicopter reach a terminal speed whilst falling during autorotation?
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What is the difference between terminal speed and terminal velocity?
Terminal speed refers to the constant speed of an object falling through a fluid when the force of air resistance equals the force of gravity. Terminal velocity, on the other hand, is the maximum speed reached by an object falling through a fluid when it stops accelerating due to air resistance. Terminal velocity is a specific type of terminal speed.
When a object falls what does it reach because of air resistance?
When an object falls, it reaches terminal velocity due to air resistance. Terminal velocity is the constant speed an object will reach when the force of gravity pulling it down is equal to the force of air resistance pushing against it. At terminal velocity, the object stops accelerating and falls at a constant speed.
Does rain reach terminal velocity?
No, raindrops do not reach terminal velocity because they are too small and have a low enough mass that air resistance slows them down before they can reach their maximum falling speed. Terminal velocity is typically reached by larger objects like skydivers or hailstones.
Does air density determine terminal speed?
Yes, air density can affect terminal speed. In denser air, there is more resistance, which can slow down an object more quickly, leading to a lower terminal speed. Conversely, in less dense air, there is less resistance, allowing an object to reach a higher terminal speed.
Is terminal velocity depends on mass of object?
No, terminal velocity does not depend on the mass of the object. Terminal velocity is the maximum speed an object can reach when the force of gravity is balanced by the force of drag. This means that all objects, regardless of their mass, will eventually reach the same terminal velocity in a given medium.
When you skydive Why don't you hit maximum speed before you hit the ground?
The maximum speed you can reach is also known as terminal velocity and this is the speed at which your mass is resisted by the air. Typically in a belly to earth body position, this is around 120mph. It takes around 10 seconds to reach this speed. The minimum exit height is 2500ft and would not reach this terminal velocity before they need to deploy their parachute. Most skydivers jump from a lot higher - between 10,000ft and 15,000ft. This gives them a freefall time of over 45 seconds and therefore they reach terminal velocity. Once the parachute is open, the decent rate is less than 10mph, so no you do not hit the ground at maximum speed in answer to your question.
Does a acorn that falls from a tree reach its terminal velocity?
No, an acorn is too small and light to reach its terminal velocity when falling from a tree. Terminal velocity is the maximum constant speed that an object reaches when the drag force equals the force of gravity, and the small size and weight of an acorn mean that it doesn't experience enough air resistance to reach this terminal velocity.
Why do skydivers reach terminal velocity?
Skydivers reach terminal velocity because as they fall, the force of gravity pulling them downward is balanced by air resistance pushing upward. At terminal velocity, these forces are equal, so the skydiver stops accelerating and falls at a constant speed.
What is the term for the highest attainable speed an object can reach as it falls?
Terminal velocity is the term for the highest attainable speed an object can reach as it falls through a fluid, such as air or water. At terminal velocity, the force of gravity pulling the object down is equal to the drag force acting against it.
What happens if water hits terminal velocity?
If water were to reach terminal velocity, it would fall at a constant speed due to the balance between gravity pulling it down and air resistance pushing it up. This means that the water would no longer accelerate and would continue to fall at that maximum speed until it reaches the ground or another surface.
