Does a ball rolling down a hill violate the law of conservation of momentum?

When a body drops from a height, it gains momentum down, while the earth gains the same momentum up. Since the earth is very massive, you can not observe its motion in reaction. Same goes for a ball rolling downhill. Thus the net change in momentum is zero and the law of conservation of momentum is validated.

Why is momentum not conserved in a falling ball?

The momentum of the ball is not conserved because an external force (gravity) is applied on it. The momentum of a system is conserved where there are no external forces on it.

Can the law of momentum conservation ever be violated?

Conservation of momentum is violated only when the net external force is not zero. But another larger system can always be considered in which momentum is conserved by simply including the source of the external force.

When ball rolls down an inclined plane its momentum increases is the momentum conserved?

No, momentum is not conserved in this case bcoz initial and final momentum are not equal due to external force acting on the system.

How is momentum conservation applied in basketball?

There is a lot of basketballs in the air and some collide with each other. When your ball collides with another ball in the air the law of conservation of momentum is acting on it. When they hit each other they have the same momentum going in as they did when they left, they are just going in opposite directions.

Why must momentum conserved?

Momentum is a vector quantity, so both its magnitude and direction are conserved. If two objects collide the sum of their momentum before is equal to the sum of the momentum afterwards. A change in momentum requires an external force. A force is required to change both the velocity and direction components of momentum.

How is momentum conservation applied in ball games?

In an elastic collision, not only is momentum is conserved, but also kinetic energy. At impact, the cue ball stops, but transfers all of its momentum and kinetic energy to the other ball, resulting in the hit ball rolling with the initial speed of the cue ball.

Why law of conservation of momentum is important?

In an isolated system (such as the universe), there are no external forces, so momentum is always conserved. Because momentum is conserved, its components in any direction will also be conserved. Application of the law of conservation of momentum is important in the solution of collision problems.

How does momentum affect basketball?

Momentum is applied to basketball when a player dribbles. When a player dribbling a basketball than they are causing the momentum to go downward. when the basketball hits the ground the opposite reaction occurs and the basketball goes upward.

When is the law of momentum conservation violated?

Your friend says that the law of momentum conservation is violated when a ball rolls down a hill and gains momentum. What do you say? The law of momentum conservation says that IF there are no external forces acting on the system, momentum will not change.

Does gravity affect momentum when a ball gains momentum?

The law of momentum conservation says that IF there are no external forces acting on the system, momentum will not change. Since, gravity, an external force, affects the ball, it is not a violation of the law when the ball gains momentum.

How do air bags affect the law of momentum conservation?

Air bags increase the time the force is applied and decrease the force, so the result is a lesser force for a longer duration. Your friend says that the law of momentum conservation is violated when a ball rolls down a hill and gains momentum.

What is the net change in momentum of the ball?

However some quick calculations will show that the change in momentum of the Earth is equal in magnitude but opposite in direction to the change in momentum of the ball. Thus the net change in momentum is zero and the law of conservation of momentum is validated.