In a perfectly ELASTIC collision between two perfectly rigid objectsGroup of answer choicesthe momentum of each object is conserved.the kinetic energy of each object is conserved.the kinetic energy of the system is conserved, but the momentum of the system is not conserved.both the momentum and the kinetic energy of the system are conserved.the momentum of the system is conserved but the kinetic energy of the system is not conserved.
Question
In a perfectly ELASTIC collision between two perfectly rigid objectsGroup of answer choicesthe momentum of each object is conserved.the kinetic energy of each object is conserved.the kinetic energy of the system is conserved, but the momentum of the system is not conserved.both the momentum and the kinetic energy of the system are conserved.the momentum of the system is conserved but the kinetic energy of the system is not conserved.
Solution
In a perfectly elastic collision between two perfectly rigid objects, both the momentum and the kinetic energy of the system are conserved.
Here's why:
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Momentum Conservation: In any type of collision (elastic or inelastic), the total momentum of the system (the sum of the momenta of the two colliding objects) is always conserved. This is due to Newton's Third Law, which states that for every action, there is an equal and opposite reaction. In the context of collisions, this means that any momentum lost by one object must be gained by the other.
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Kinetic Energy Conservation: In a perfectly elastic collision, not only is momentum conserved, but the total kinetic energy of the system is also conserved. This is a special property of elastic collisions. The kinetic energy of an object is the energy that it possesses due to its motion, and in an elastic collision, no kinetic energy is lost to heat, sound, or deformation.
So, the correct answer is "both the momentum and the kinetic energy of the system are conserved."
Similar Questions
In an INELASTIC collision between two objectsGroup of answer choicesthe momentum of the system is conserved but the kinetic energy of the system is not conserved.the kinetic energy of each object is conserved.both the momentum and the kinetic energy of the system are conserved.the momentum of each object is conserved.the kinetic energy of the system is conserved, but the momentum of the system is not conserved.
In a perfectly elastic collision between two objects, which of the following is true?*1 pointKinetic energy is conserved, but momentum may not be conserved.Momentum is conserved, but kinetic energy may not be conserved.Both momentum and kinetic energy are conservedNeither momentum nor kinetic energy is conserved.
In a completely inelastic collision:Group of answer choicesBoth kinetic energy and momentum are conserved.The initial kinetic energy is all converted to heat.Momentum is conserved but kinetic energy is not conserved.Neither kinetic nor momentum is conserved.Kinetic energy is conserved but momentum is not conserved.
What is a perfectly inelastic collision? 2 marksKinetic energy and momentum is conserved Kinetic energy is conserved and momentum is not conserved Kinetic energy is not conserved and momentum is conserved Kinetic energy and momentum are conserved
What is a perfectly elastic collision? 2 marksKinetic energy and potential energy is conserved Kinetic energy and momentum are conserved Kinetic energy is conserved Potential energy is conserved
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