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A reaction force is bascally a force that acts in the opposite direction to an action force. It can better be described as when one fires a bullet from a gun, they feel being pushed backward. The action force in this case is the gun pushing out the bullet and the reaction is the bullet pushing back on the gun and its holder.

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15y ago
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13y ago

A reaction force must exist because it keeps forces balanced, so for example, if only gravity existed and not the reaction force from the ground which keeps us from sinking into the ground, then we would be stuck to the ground. (you might want to re-word your sentence). :D

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5mo ago

A reaction force is a force that is equal in magnitude and opposite in direction to an action force. It occurs when an object exerts a force on another object, and that second object exerts an equal and opposite force back on the first object, according to Newton's third law of motion.

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13y ago

A reaction force must exist because without it the other force, such as gravity without the force of lift will always be in power and we would be literally stuck to the ground :D
A reaction force must exist because it keeps forces balanced, so for example, if only gravity existed and not the reaction force from the ground which keeps us from sinking into the ground, then we would be stuck to the ground. (you might want to re-word your sentence). :D

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11y ago

It's actually pretty simple. You transfer your energy to the object. For example, a car weight 600Kg traveling at 60 miles per hour, and it hits an object which also weight 600 Kg. After the collision, the object travels at 60MPH, and the car stopped. Newton said that the car apply a force on the object(action), and the object also apply a force on the car(reaction) so the car stopped. But isn't it make sense to say that the car gave all it's energy to the object, so the car had no energy?

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16y ago

<(^>^)> Well to prvoe the reaction they must be certain changes in the solution * heat change * colour change * or some others.

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13y ago

we will sink in the ground without reaction force i think.... mmm... i really dont know...

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16y ago

Because of Newton's Third Law, which applies that every action must have an equal and opposite reaction.

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Q: What is a reaction force?
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Related questions

What is a reaction force and formula?

A reaction force is the force exerted by an object in response to a force applied to it. The formula to calculate a reaction force is Newton's third law of motion: F(reaction) = -F(action), where F(action) is the original force applied. The reaction force always acts in the opposite direction of the applied force to satisfy the law of action-reaction.


How can there be an unbalanced force on an object if every action has an equal and opposite reaction?

"action/reaction" does not mean " force". "Applying force" is an action, not the force itself. So, applying force will create a reaction, which may or may not balance the applied force.


What is the name often given to the force exerted by the first object on a second object?

The name often given to the force exerted by the first object on a second object is the action force.


What is the reaction force to Centripetal Force within a Centrifuge If centrifugal forces are fictitious?

Always centrifugal is the reaction force for centripetal


What is a force opposite to an action?

Reaction Force.


What force occurs when you apply an action force'?

a reaction force


Is reaction a contact force or field?

A reaction is not a separate force; it is a force that occurs as a response to an action. In the context of contact forces, a reaction force is the force exerted by an object in response to a force acting on it. It is a contact force that arises due to the physical interaction between two objects.


Do action and reaction act on same body?

The force acting on an object "A" from outside is action force , and the reaction force is the force exerted by A to the outside object . Therefore, it is obvious that action force and the corresponding reaction force cannot act on one and the same body.


Are centrifugal force and Reactive Centrifugal force the same thing?

Reactive centrifugal force is not the same thing as centrifugal force. Reactive centrifugal force is the reaction force. It is the reaction force reacting to a centripetal force.


How do you work out the reaction force on something?

To calculate the reaction force on an object, you can use Newton's third law which states that for every action, there is an equal and opposite reaction. Identify the forces acting on the object and then determine the reaction force that counteracts those forces in the opposite direction. This reaction force is equal in magnitude but opposite in direction to the external forces acting on the object.


What is the reaction force when your foot pushing down on the ground?

The reaction force is equal in magnitude and opposite in direction to the force your foot exerts on the ground. This reaction force is what allows you to push off the ground and move forward.


How is the speed of chemical reaction related to the spontaneity of the reaction?

The speed of a given chemical reaction is directly responsible for spontaneity of the reaction. The reaction force and effect is contingent upon the speed of the reaction. The faster the reaction, the more force will be produced.