An outside force causes an object to have more momentum. For example, if you push a ball, the ball would have more momentum and would therefore move. You pushing the ball would be the outside force.
You can't think of momentum as simply "increasing" and "decreasing" - you have to consider momentum as a vector.If in a collision one object's momentum changes by a certain amount, call it "a", the momentum of the other object will change by the opposite amount, "-a" - both "a" and "-a" are vectors that add up to zero. If you consider only the magnitudes of the momentum, by conservation of energy the momenta can't both increase - but they can certainly both decrease, when objects collide head-on.
Friction causes object in motion to slow down. As friction increases, it takes more and more energy for an object to keep its inertia (momentum) and it begins to slow down.
less density means you will not be able to give the ball momentum, but to little causes the object to fall quickly
Each of those changes causes an increase in both the momentum and kinetic energy of the moving object.
When an object is still it has no momentum. That is, the momentum is zero.
Force applied to the object
That would depend on what you consider "large".The size of an object's momentum = (its mass) x (its speed).So, more mass and more speed result in more momentum.
You can't think of momentum as simply "increasing" and "decreasing" - you have to consider momentum as a vector.If in a collision one object's momentum changes by a certain amount, call it "a", the momentum of the other object will change by the opposite amount, "-a" - both "a" and "-a" are vectors that add up to zero. If you consider only the magnitudes of the momentum, by conservation of energy the momenta can't both increase - but they can certainly both decrease, when objects collide head-on.
Friction causes object in motion to slow down. As friction increases, it takes more and more energy for an object to keep its inertia (momentum) and it begins to slow down.
An object with more momentum will have more inertia. Inertia is the ability to resist a change in force; objects with higher masses and higher speeds will have greater inertia. Speed * mass = momentum
The more the mass, the more momentum you will need for an object to speed up more, or accelerate.
Momentum is the product of velocity and mass - so to have a "higher momentum", the object must either be more massive, or it must move faster.
less density means you will not be able to give the ball momentum, but to little causes the object to fall quickly
Each of those changes causes an increase in both the momentum and kinetic energy of the moving object.
When an object is still it has no momentum. That is, the momentum is zero.
Momentum can be transferred from one object to another. Momentum can be slowed by an intervening object. Momentum can be hastened by an intervening object.
A force acting on a body causes acceleration. Acceleration is measure of the rate of change in the object's velocity. As its velocity changes, its momentum, which is the product of its mass and velocity, will change.