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Strictly speaking weight is the force of gravity acting on an object. It should not be confused with the objects mass.
Weight ⇔ force
When something is on the moon it weights less but its mass is the same.
Something special about gravity is that in the absence of air friction, all objects accelerate down at the same rate irrespective of their weight because as a objects weight increases, so does its mass.
Take the equation..
F = ma
or
(weight of an object) = (its mass) x (its acceleration)
When an objects weight doubles so does it mass, so the acceleration does not change.
Wiki User
∙ 14y ago
Wiki User
∙ 13y agoThe real term you are looking for is mass not weight. Weight is the measure of force that you would exert in a given gravitational field, ie on the Earth. Mass is your substance that determines your own gravitational field. They are related and synonomis on the surface of Earth, however, differ everywhere else. Momentum is the product of mass and velocity as seen with the equation below.
p = m*v
where p is the momentum, m is the mass, and v is the velocity. When velocity is a constant, momentum is proportional to mass.
Wiki User
∙ 14y agoWeight (preferably called mass) is directly proportional to the momentum of an object. In other words, a twenty pound rock falling at 10 meters per second is twice as hard to stop as a ten pound rock falling at 10 meters per second.
Wiki User
∙ 14y agoWhen two surfaces slide overreach other, there will be a force acting against the motion, called friction. The force needed to push an object along a surface is the force necessary to overcome the friction between the object and the surface. This frictional force depends on two things. Firstly, the nature of the object and also the friction of the surface itself. Secondly, the force between the object and the surface, so it will be harder to push the object over the surface if the downward force of the object, the weight, increases.
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Does an object with momentum always have energy?
Not if it's potential energy. Only objects with kinetic energy have momentum.
The weight of an object is an example of?
The weight of an object is an example of the physical properties of the object and the effect of gravity on a mass.
Does the mass of the car effect the speed?
A cars weight affects its speed by varying its momentum. If the car has more weight, it has more momentum. With more momentum comes more inertia.(definition: inertia- an objects resistance to change in direction or movement) If the car has a lot of weight, it will speed up slower and stop slower because the cars inertia and momentum keep propelling it forward. If a car has less weight, it will speed up faster and stop faster because the momentum of the car is less than that of the heavier car. A: It is called the power to weight ratio.
How would throwing an object affect the fingerprint left on it?
Assuming the fingers are in contact to push or pull the object, the amount of pressure put on the fingers to move an object would increase with the weight of the object. This results because friction force that must be overcome to push or pull the object is proportional to the object's weight. [Elementary physics.] And the print definition varies with the pressure used to implant the fingerprint. If the fingers are not pressed hard enough against the object, some of the print will be missing from the object. If they are pressed too hard, the print will be smudged and ill-defined. And that's the answer. Fingerprints are likely to be smudged with moving heavy objects, missing in part with moving light objects, and better defined when moving medium weight objects. All this assumes we're using the fingers in all cases. In fact, we'd probably use the palms of our hands if we are moving heavy objects; so the fingers might not even touch the object.
What is friction affected by?
Weight and surface affect friction. The more mass an object has more friction that will occur ex:/ It would be harder to slide an elephant across a floor than a hockey puck. This is because the large amount of friction on the elephant would slow it down. The smoother the surface the less friction. ex:/ There will be more friction on a floor of sandpaper than there would be on a floor of ice.
Which of the quantitative properties would double if you doubled the mass of an object?
-- weight -- momentum when moving -- kinetic energy when moving -- force on it needed to produce a given acceleration -- potential energy at a given height
Can 2 interacting objects have momentum but no kinetic energy?
no kinetic energy is basically "in motion", momentum is built upon speed, weight, and strength of a moving object. if you would like the definition of potential energy it is the ability or placement of an object before kinetic energy forms
Does an object with momentum always have energy?
Not if it's potential energy. Only objects with kinetic energy have momentum.
A lunar vehicle is tested on earth at a speed of 10 kmh when it travels as fast on the moon is its momentum more less or the same?
The momentum of a moving object is (mass of the object) multiplied by (speed of the object). Neither of those numbers is affected by where you are, whether on a planet, on a moon, or in space. Mass times speed equals momentum.
Why is velocity needed to measure momentum?
In physics, the momentum of an object is the amount of energy it has moving in a direction. It is a product of its mass (weight) and its velocity (speed and direction) as in (momentum = Mass times velocity). Momentum changes when speed is increased or decreased, its direction changes, or its mass changes. An example of changing momentum is an object in space such as a meteor falling to the earth. Gravity can make it come down faster increasing its momentum. Atmospheric friction heats up the object causing some of it to burn away reducing its mass and decreasing its momentum. Another example of momentum is a snowball rolling down a snow covered mountain. Gravity pulling it down increases it speed (velocity) and momentum. Rolling down in snow, it accumulates snow, gets larger, increasing in weight (mass) and momentum.
What are the two factors which determine the momentum of a body?
Momentum depends on the mass and the velocity of an object. In physics, P=mv, momentum equals mass times velocity.
What is the effect of acceleration on an object which is not moving?
An object which is not moving is not experiencing any acceleration, other than the acceleration due to gravity, which, along with mass gives it its weight. The upward force (normal force) acting on the object is equal to but opposite to its weight, and all of the forces acting on the objects are in equilibrium so the net force is zero Newtons.
What is used to measure momentum?
A scale, a stopwatch and a ruler. Weigh the object of which you want to know the momentum, and determine its speed using the stopwatch and ruler. The momentum can then be calculated as the product of the weight and the speed.
What is the weight of a moving object?
It's(the object's mass) multiplied by (the acceleration of gravity in the place where the object is).
Moving an object to Jupiter would change its?
Weight.
What are the factors affecting the speed of a moving object?
Factors that affects the speed of a moving object:*Force*Friction*Gravity*Weight
Why do you have to exert extra force to get a heavy object moving and then have to keep applying force to keep it moving at constant velocity?
the heavier and the bigger the object the more force you need to use to keep it moving . the less weight and the smaller an object is the less force you need to use to keep it moving. it always depends on the weight of the object and the size of the object.
