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An object is projected straight upward. Neglecting air resistance it .?
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Is the acceleration the same on an object that is drop or when its thrown?
It is the same (neglecting air resistance).
Why can a projectile maintain a constant horizontal speed when neglecting air resistance?
because of the mass of the object
If air resistance is neglected what is the motion of an object projected at an angle consists of a uniform downward acceleration combined with what?
a constant horizontal speed
What is Air resistance directly proportional?
Air resistance on an object is also referred to as drag. The equation for drag force on an object takes the following form,FD = (1/2) CD A ρ v2where CD is the coefficient of drag for an object of that shape, A is the projected area normal to the direction of air flow, ρ is the air density, and v is the velocity of the air.The force of drag, or air resistance, is therefore proportional to:the projected area of the objectthe density of the airthe square of the velocity
What is it called when an object falling straight down without air resistance?
It is called Free Fall.
Is the acceleration the same on an object that is drop or when its thrown?
It is the same (neglecting air resistance).
Why can a projectile maintain a constant horizontal speed when neglecting air resistance?
because of the mass of the object
Is it true that neglecting air resistance is a good approximation for the motion of a real object tossed in the air if the object is both light and moving slowly over a relatively short distance?
Not really. Neglecting air resistance just makes it easier to solve equations and grasp concepts. If one were to actually be collecting data from your experiment, they would have to take in air resistance, especially if the object's cross section were high and/or density was low.
If air resistance is neglected what is the motion of an object projected at an angle consists of a uniform downward acceleration combined with what?
a constant horizontal speed
What is Air resistance directly proportional?
Air resistance on an object is also referred to as drag. The equation for drag force on an object takes the following form,FD = (1/2) CD A ρ v2where CD is the coefficient of drag for an object of that shape, A is the projected area normal to the direction of air flow, ρ is the air density, and v is the velocity of the air.The force of drag, or air resistance, is therefore proportional to:the projected area of the objectthe density of the airthe square of the velocity
When an object is drop disregarding air resistance does a heavier object take less time to fall or have bigger final velocity?
No, neglecting air resistance, all objects fall at the same rate regardless of their mass or shape. Galileo was right about this, as proved on the Apollo 15 mission to the moon. An astronaut on the moon (where there is no air) simultaneously dropped a hammer and feather, and they both fell straight down at the same rate, and hit the ground at the same time.
What is it called when an object falling straight down without air resistance?
It is called Free Fall.
What is the difference between projected and non projected aids?
A non projected aid used in teaching would be a chalkboard, textbook, or audio with no video capabilities. A projected aid is a visual aid such as a computer with graphics and television.
If an object with a mass of 100 g is in free fall What is the speed of the object after it has fallen for 4 seconds?
Neglecting air resistance, it will be 39.2 m/sec, regardless of the mass of the object. The acceleration due to gravity is 9.8 m/sec2 x 4 seconds = 39. 2 m/sec
What are the conditions for a freely falling object?
Weight should be the only force for a free fall of an object. They should fall under the influence of gravity only. They should not face any significant force of air resistance.
An object projected up with initial velocity v attains a height h Another object projected up with initial velocity 2v will attain what height?
4h
How does air resistance change speed?
Air resistance acts in the opposite direction of an object's motion to reduce its speed. The force of air resistance or drag is given by the following formula:FD = 1/2 A CD ρ v2whereA is the projected area of the objectCD is the drag coefficientρ is the air densityv2 is the relative velocity of the air
