Its mass and its velocity. In Newtonian mechanics you have a rather simple formula for calculating the momentum of an object:
p = m * v
Where p is the momentum, m the mass, and v the velocity.
In special relativity (i.e. when the speed approaches that of light) you have to use a different formula:
p = gamma * m * v
Where gamma is the gamma factor given by 1/sqrt(1-sqr(v/c)), with c the speed of light. This formula becomes the Newtonian one in the limit of v going to zero.
The object's mass and speed.
Friction does not affect inertia, but it affects momentum. Momentum is the product of the mass of an object and its speed. Friction forces, if present, will always act to decrease the momentum of a moving object.
force and acceleration
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Because high and low momentum = high and low acceleration because it depends. =]
The object's mass and speed.
force and acceleration
Friction does not affect inertia, but it affects momentum. Momentum is the product of the mass of an object and its speed. Friction forces, if present, will always act to decrease the momentum of a moving object.
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The affect of force on the object during collision is described by a quantity called momentum. It is defined as p = mv where = p is momentum, m = mass of the object and v is velocity.
Because high and low momentum = high and low acceleration because it depends. =]