0
What is the acceleration of the same object in the above question when it is descending?
Wiki User
∙ 8y agoWant this question answered?
Be notified when an answer is posted
Add your answer:
Earn +20 pts
How do photons exert force if force is mass times acceleration and photons have no rest mass and travel at constant speed?
The problem in the posed question is the "mass" in the equation you quote is the mass of the object upon which the force (whether it be a photon or not) is acting, NOT the mass of the object exerting the force. You can MEASURE the net force on an object with mass simply by measuring the acceleration of that object and dividing it by the object's mass. Or you can predict an acceleration of an object with mass by calculating what its net force will be, and then dividing that by the object's mass. Unrelated to the above excellent answer, but another comment on the question: You mention, correctly, that photons have no rest-mass. But the photon is never at rest, and at the speed at which it moves from place to place, it has mass.
Is the force of gravity expierenced by an object fifty miles above the earth the same as if it were on the earth?
No. However at that altitude, it is likely there are some forces of acceleration acting on the object which will affect it.
What does the gravitational potential energy of an object depend on?
It depends on the mass of the object, the local value of acceleration of gravity, and the object's height above the elevation you're using for your zero-potential-energy reference level.
What is the second law of motions?
Newton's second law of motion pertains to the behavior of objects for which all existing forces are not balanced. The second law states that the acceleration of an object is dependent upon two variables - the net force acting upon the object and the mass of the object. The acceleration of an object depends directly upon the net force acting upon the object, and inversely upon the mass of the object. As the force acting upon an object is increased, the acceleration of the object is increased. As the mass of an object is increased, the acceleration of the object is decreased. === === Newton's second law of motion can be formally stated as follows: The acceleration of an object as produced by a net force is directly proportional to the magnitude of the net force, in the same direction as the net force, and inversely proportional to the mass of the object. This verbal statement can be expressed in equation form as follows: The above equation is often rearranged to a more familiar form as shown below. The net force is equated to the product of the mass times the acceleration.
What factors that affect motion?
An object's motion is affected by the initial speed and acceleration and the forces that interact with it, the most important being: Gravity - that is affected by the gravitational constant g - which is affected by altitude; Air friction - that depends on the speed of the object and it's volume and air density; Surface friction - depends on the size of the surface of contact, the force that the object exerts on the surface, the surface and the object's coefficient of friction; All the above forces are proportional to the mass of the object.
How do photons exert force if force is mass times acceleration and photons have no rest mass and travel at constant speed?
The problem in the posed question is the "mass" in the equation you quote is the mass of the object upon which the force (whether it be a photon or not) is acting, NOT the mass of the object exerting the force. You can MEASURE the net force on an object with mass simply by measuring the acceleration of that object and dividing it by the object's mass. Or you can predict an acceleration of an object with mass by calculating what its net force will be, and then dividing that by the object's mass. Unrelated to the above excellent answer, but another comment on the question: You mention, correctly, that photons have no rest-mass. But the photon is never at rest, and at the speed at which it moves from place to place, it has mass.
What is the acceleration of an object effected by gravity thrown at a 45 degree angle above the horiziontal at its highest point?
The only force acting on a projectile once launched is gravity. So the acceleration of any object launched at any angle is the acceleration due to gravity, -9.8m/s2.
What is the gravitational potential energy of an object equal to?
It is the product of the mass of the object in Kg, the gravitational acceleration which is 9.81 m/sec2, and the height of the object above earth's surface in meters. Result is in Joules
Is the force of gravity expierenced by an object fifty miles above the earth the same as if it were on the earth?
No. However at that altitude, it is likely there are some forces of acceleration acting on the object which will affect it.
What factors does the gravitational energy of an object depend on?
It depends on the mass of the object, the local value of acceleration of gravity, and the object's height above the elevation you're using for your zero-potential-energy reference level.
What does the gravitational potential energy of an object depend on?
It depends on the mass of the object, the local value of acceleration of gravity, and the object's height above the elevation you're using for your zero-potential-energy reference level.
What is m g h?
mgh represents the potential energy of an object located at a height h above the ground, where m is the mass of the object, g is the acceleration due to gravity, and h is the height. It is calculated as the product of the mass, acceleration due to gravity, and the height.
What is the second law of motions?
Newton's second law of motion pertains to the behavior of objects for which all existing forces are not balanced. The second law states that the acceleration of an object is dependent upon two variables - the net force acting upon the object and the mass of the object. The acceleration of an object depends directly upon the net force acting upon the object, and inversely upon the mass of the object. As the force acting upon an object is increased, the acceleration of the object is increased. As the mass of an object is increased, the acceleration of the object is decreased. === === Newton's second law of motion can be formally stated as follows: The acceleration of an object as produced by a net force is directly proportional to the magnitude of the net force, in the same direction as the net force, and inversely proportional to the mass of the object. This verbal statement can be expressed in equation form as follows: The above equation is often rearranged to a more familiar form as shown below. The net force is equated to the product of the mass times the acceleration.
What factor does the gravitational potential energy of an object depend on?
It depends on the mass of the object, the local value of acceleration of gravity, and the object's height above the elevation you're using for your zero-potential-energy reference level.
How can an object have zero acceleration?
i am ten so this will be a wimpy answer. it is an object that has nothing to propel it and therefor it has no acceleration. see wimpy Actually the above is wrong because an object can still be moving but it is accelerating only when there is a change in speed or direction. A car moving at a constant speed of 50 m/h is not accelerating however we can agree that it is still moving.
What is an object that has gravitational potential energy?
Any object with mass that's been lifted above the reference level (usually taken to be ground level) has gravitational potential energy with respect to the reference level. The formula is PE = mgh. m = the object's mass g = the local acceleration of gravity h = height of the object above the reference level
What are Palindromes for abbreviation for 2 above?
It means the question number two on the paper.
