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Air friction, or drag, acts opposite to the direction of motion, slowing down a falling body as it moves through the air. The greater the surface area of the object or its speed, the more air resistance it experiences, which reduces its speed. This force can eventually reach a point where it equals the force of gravity, causing a terminal velocity, where the object no longer accelerates and falls at a constant speed.
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What friction causes a sky divers to change as she falls?
As a skydiver falls, air resistance causes friction against her body, gradually slowing her down. This friction increases as her speed decreases, ultimately leading to a terminal velocity where the forces of gravity and air resistance balance, resulting in a constant falling speed. This friction also helps stabilize the skydiver's position during free fall.
How do belayers use friction?
Belayers use friction by controlling the rope to create tension and help prevent the climber from falling. By holding the rope in a certain way and using their body position, belayers can manage the amount of friction on the rope to regulate the climber's speed and stop them safely. Proper friction management is essential for effective belaying and ensuring the climber's safety.
What is the speed of a falling body?
The speed of a falling body increases by 9.8 m/s^2 due to gravity, assuming no air resistance. This acceleration is constant until it reaches terminal velocity when air resistance matches gravitational force, causing the speed to stabilize.
What is the graph of the motion of a body falling vertically that reaches a terminal speed?
The graph of the motion of a body falling vertically that reaches a terminal speed would show an initial acceleration until the body reaches its terminal velocity. At this point, the graph would level off, showing constant velocity as the body falls continuously.
What is the friction between the air and the surface of a moving object?
The friction between the air and the surface of a moving object is known as air resistance or drag. It acts in the opposite direction to the object's motion, increasing with speed and surface area exposed to the air. Air resistance reduces the object's speed and efficiency of movement.
How does drag work?
Drag force, or the force of air friction for a falling body, increases with speed. A falling object will reach a speed at which the force of air friction will be equal to and opposite the force of gravity. At that point, the object will no longer accelerate. It's speed will remain constant, and we call that speed (and direction) its terminal velocity.
What would be the appearance of the speed-time curve if the falling body were so light that the effect of air friction could not be neglected?
If air friction can be neglected, then the speed/time graph for any falling body would bea straight line that slopes up. If the body were falling near the Earth's surface, then theslope of the line would be (9.8 meters per second) per second.I'm pretty sure that the lighter objects are the ones most affected by air friction,and the heavier ones approximate the math of pure gravity more closely.Think about dropping a rock and a piece of tissue.
What friction causes a sky divers to change as she falls?
As a skydiver falls, air resistance causes friction against her body, gradually slowing her down. This friction increases as her speed decreases, ultimately leading to a terminal velocity where the forces of gravity and air resistance balance, resulting in a constant falling speed. This friction also helps stabilize the skydiver's position during free fall.
How do belayers use friction?
Belayers use friction by controlling the rope to create tension and help prevent the climber from falling. By holding the rope in a certain way and using their body position, belayers can manage the amount of friction on the rope to regulate the climber's speed and stop them safely. Proper friction management is essential for effective belaying and ensuring the climber's safety.
What is the speed of a falling body?
The speed of a falling body increases by 9.8 m/s^2 due to gravity, assuming no air resistance. This acceleration is constant until it reaches terminal velocity when air resistance matches gravitational force, causing the speed to stabilize.
How does speed increase the weight of a moving body?
Speed does not increase the weight of a moving body. Weight is determined by the mass of the object and the force of gravity acting on it, and it remains constant regardless of speed. Speed only affects the kinetic energy of the body, which is proportional to the square of the speed.
What is the graph of the motion of a body falling vertically that reaches a terminal speed?
The graph of the motion of a body falling vertically that reaches a terminal speed would show an initial acceleration until the body reaches its terminal velocity. At this point, the graph would level off, showing constant velocity as the body falls continuously.
What is the friction between the air and the surface of a moving object?
The friction between the air and the surface of a moving object is known as air resistance or drag. It acts in the opposite direction to the object's motion, increasing with speed and surface area exposed to the air. Air resistance reduces the object's speed and efficiency of movement.
How fast is the acceleration of a falling body?
The acceleration of a falling body due to gravity is approximately 9.81 m/s^2, often rounded to 10 m/s^2 for simplicity. This means that the speed of a falling body increases by 9.81 meters per second every second.
Can an object in infinite free fall using earth's gravity in a vacuum reach the speed of light?
No. There's an interesting mathematical relationship here: Assuming no friction and no interference from other bodies, the speed acquired by a body falling "from infinity" towards another object is exactly equal to the "escape velocity" from that object. For Earth, this is about seven miles per second, nowhere near the speed of light.
What affects the speed of a falling object?
The mass of a falling object will affect the speed at which it falls. Additionally, the shape or geometryof that object will also have an effect. The shape of a falling object will have a dramatic effect on the amount of dragthat the object will experience. Consider that a flat piece of cardboard will fall more slowly than a glass ball of the same mass, and it will be more easy to visualize how drag is a function of shape.=======================================Beulah the Buzzer gagged on the first sentence of the response above, andSignor Galileo rotated 2pi in his crypt.The mass of a falling object will NOT affect the speed at which it falls.The remainder of the response above is correct and well stated, provided onlythat the objects are falling through air. If not, then neither their shape nor theirgeometry affects their rate of fall either.
Why does acceleration vary at different places?
Acceleration varies at different places due to changes in factors such as gravity, friction, and air resistance. Gravity affects acceleration by pulling objects downward with different strengths depending on an object's distance from a massive body. Friction and air resistance can also impact acceleration by opposing motion and slowing down an object's speed.
