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What property of matter determines how much inertia an object has?
The mass of an object determines how much inertia it has. Inertia is the resistance of an object to changes in its motion, and this resistance is greater for objects with more mass.
In what part of a stream is the water usually flowing the fastest?
The water usually flows fastest in the middle and top sections of a stream, where the water has the least amount of friction with the streambed and banks. This is because the water in these areas does not experience as much resistance as it would at the bottom of the stream.
Does paper have a high air resistance?
No, because the paper has a smaller surface area.
Why do some objects float in water and others don't?
Objects float in water if they have a density lower than water, while objects sink if they have a density higher than water. Density is a measure of how much mass per unit volume an object has. This is why objects like wood and plastic, which have lower density than water, tend to float, while objects like metal, which have higher density, tend to sink.
Why do objects of different mass fall at the same rate?
objects of different mass fall at the same rate because the acceleration due to gravity is a constant rate. this means that all objects on the earth surface when dropped accelerate at 9.8m/s^2. the only reason this doesn't happen on earth is because of air resistance. take a feather and book for example the feather has more air resistance and floats sideways as well as down compared to the book that doesn't have much air resistance. BUT if you put the feather on the book then dropped it, they would fall at the same time because air resistance is negligible at this point.
What property of matter determines how much inertia an object has?
The mass of an object determines how much inertia it has. Inertia is the resistance of an object to changes in its motion, and this resistance is greater for objects with more mass.
In what part of a stream is the water usually flowing the fastest?
The water usually flows fastest in the middle and top sections of a stream, where the water has the least amount of friction with the streambed and banks. This is because the water in these areas does not experience as much resistance as it would at the bottom of the stream.
What causes a freely falling object to stop acclerating and continue to fall at its final velocity?
The answer lies in air resistance, which sets a limit, the so-called terminal velocity, on the speed of a falling object. Air resistance creates drag, a real physical phenomenon associated with objects moving through a fluid. You experience drag riding a bike. Imagine how much drag is on a jet airliner! A boat is affected by drag moving through water. Aerodynamics and hydrodynamics address these issues.
Why do some objects float and others do not?
because some objects are much denser(heavier) than water so they sink
Does paper have a high air resistance?
No, because the paper has a smaller surface area.
How much denser is water compared to air?
Water is approximately 800 times denser than air at standard temperature and pressure. While the density of air is about 1.2 kg/m³, water has a density of about 1,000 kg/m³. This significant difference in density is why objects can float in water and why we experience buoyancy when submerged.
Why do some objects float in water and others don't?
Objects float in water if they have a density lower than water, while objects sink if they have a density higher than water. Density is a measure of how much mass per unit volume an object has. This is why objects like wood and plastic, which have lower density than water, tend to float, while objects like metal, which have higher density, tend to sink.
Why do objects of different mass fall at the same rate?
objects of different mass fall at the same rate because the acceleration due to gravity is a constant rate. this means that all objects on the earth surface when dropped accelerate at 9.8m/s^2. the only reason this doesn't happen on earth is because of air resistance. take a feather and book for example the feather has more air resistance and floats sideways as well as down compared to the book that doesn't have much air resistance. BUT if you put the feather on the book then dropped it, they would fall at the same time because air resistance is negligible at this point.
Does shape affect air resistance on an object?
Yes it does. Friction tends to slow down objects in motion, like if you throw a brick through the air, it will not go far, depending on the force you used to throw the brick. Its speed will gradually decline due to the brick's friction with air. Now if you threw a football through the air using the same force that you used to throw the brick, it will go a lot farther than the brick because of its shape. The blunt edge of the football makes it easier to 'slice' through the air, thus creating less friction. It is the same aspect with the shape of a car. The front of the car is blunt, so it will 'cut' through the air without much friction.
Why do some objects fall at a different rate than others?
Objects fall through air at a different rate due to the amount of air resistance. Feathers or dandelion "parachutes" fall at a much slower pace than coins. However there is an experiment called "The coin and the feather". A glass tube about 6cm in diameter has a penny and a penny placed inside before the air is evacuated using a vacuum pump. The tube is then sealed. If the tube is held vertically the coin and feather are both at the bottom. If the tube is then swiftly inverted, so that what was bottom becomes top, the coin and feather are seen to fall at the same rate. Unbelievable unless you actually see it.
Will objects with densities higher than water sink or float?
Objects with densities higher than water will sink. Density is the measure of how much mass is contained in a given volume, so objects with higher densities will displace less water than their own mass which causes them to sink.
Why do objects that float take out more water than objects that sink?
Objects that float displace more water than objects that sink because the buoyant force acting on the floating object is equal to the weight of the water displaced. This means the weight of the floating object is less than the weight of the water it displaces, causing it to rise and push out more water. Objects that sink do not displace as much water because their weight is greater than the weight of the water they could displace.
