In what ways do the air resistance and the shape of anobject influences its acceleration and speed??

Question

I need it really fast!!

Answer 1

Air resistance is a force operating in opposition to thrust. With a given thrust the object increases speed, which increases drag due to air resistance, until thrust and drag are equal at which point the object no longer accelerates. This also applies if the "thrust" is gravity acting on a falling object -- it will reach "terminal velocity" when gravity has accelerated it to a speed at which the air resistance is equal to the weight of the falling object, at which point the forces are in equilibrium and the object neither increases nor decreases in speed.

The shape of an object affects air resistance -- generally speaking the greater the cross section and the flatter the leading and trailing edges are perpendicular to the direction of travel, the greater the air resistance and the lower the maximum velocity or terminal velocity that can be achieved.

By adjusting the shape of an object so that air flows around that object with the minimum of resistance, you decrease the drag and this in turn increases the maximum acceleration and speed. It can alternately be used to increase efficiency as less thrust is needed to achieve the same accelerations and speeds.

Answer 2

Air resistance pushes up on a falling object. If there is more area exposed on the object, then there is more air resistance pushing up on the object and that 's why it will fall at a lower speed. Acceleration is different from speed, and is usually around 9.8 meters/second squared. Also, the mass of the object greatly affects how fast an object falls.

Answer 3

The answer to your question is that drag is directly proportional to the square of velocity. While this has no direct bearing on acceleration, it does have a bearing on how much force is required to double the speed, for example. To double the velocity would require four times the force to overcome drag, for example.

Answer 4

the resistance you speak of, determines the friction.
friction is a force (reaction) caused by the force that drives the subject (action). friction "spends" all the action force that drives the object until it reaches a stable state again and stops.

Answer 5

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