Question

Why does a moving object come to a stop on a frictional surface?

Answer 1

== Answer == All kinds of friction cause moving objects to slow down or stop. Friction can be quantified as a force resisting motion which is proportional to the weight of the object, for an object lying on a flat surface. The frictional force is found by multiplying the objects weight by a coefficient of friction, which is usually less than one, but can be higher than one (for example with rubber tyres on dry tarmac). Therefore friction requires a greater force to be applied to move the object. A similar coefficient called the drag coefficient is used to quantify air resistance in vehicles and aircraft-the faster you go the higher the frictional force, in this case.
Friction is a force that acts against a moving object to slow it down. A type of friction is air resistance.
Friction opposes the direction in which the object is moving, causing the object to decrease in speed, or stop all together.

Read more: http://wiki.answers.com/Q/What_effect_does_friction_have_on_a_moving_object#ixzz1wwQTsjiT

Answer 2

Are you kidding me? Because of the frictional force which acts opposite the force in direction of movement of object.

Answer 3

Because as an object moves on top of a surface, the friction which is a force that opposes the direction of motion causes negative acceleration to occur until the velocity is 0 and when the velocity is 0 there is no more friction because friction, like I said above, is a force that opposes the direction of motion but if you're no longer moving, there is no longer a force of friction being applied.

Similarly, you can think of a velocity of 0 as static motion on which there is a force of 0 against it.