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Question 1:

Which of the following quantities is conserved in an elastic collision between two objects?

A) Momentum
B) Kinetic energy
C) Both momentum and kinetic energy
D) Neither momentum nor kinetic energy

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Explanation: The correct answer is A) Momentum. In an elastic collision, the total momentum of the system is conserved. This means that the sum of the momenta of the objects before the collision is equal to the sum of the momenta after the collision. However, the kinetic energy of the system may change due to the redistribution of energy between the objects.

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Question 2:

Which type of collision involves objects sticking together after colliding?

A) Elastic collision
B) Inelastic collision
C) Perfectly inelastic collision
D) Totally inelastic collision

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Explanation: The correct answer is C) Perfectly inelastic collision. In a perfectly inelastic collision, two objects stick together and move as a single combined object after the collision. In this type of collision, kinetic energy is not conserved, and the objects become permanently deformed or tangled together.

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Question 3:

Which of the following statements is true regarding an inelastic collision?

A) Total momentum is conserved, but kinetic energy may not be conserved.
B) Total momentum is not conserved, but kinetic energy is conserved.
C) Both total momentum and kinetic energy are conserved.
D) Neither total momentum nor kinetic energy is conserved.

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Explanation: The correct answer is A) Total momentum is conserved, but kinetic energy may not be conserved. In an inelastic collision, the total momentum of the system is conserved, meaning the sum of the momenta before and after the collision is the same. However, kinetic energy may be lost in the form of internal energy, deformation, or other non-conservative factors.

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Question 4:

Which of the following scenarios describes an example of an isolated system?

A) Two cars colliding on a road
B) A ball rolling down a hill
C) A satellite orbiting the Earth
D) Water flowing through a pipe

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Explanation: The correct answer is C) A satellite orbiting the Earth. An isolated system is one in which there is no external influence or interaction with the surroundings. In the case of a satellite orbiting the Earth, it experiences negligible external forces and interactions, making it a good example of an isolated system where the total momentum and total mechanical energy are conserved.

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Question 5:

Which of the following factors can affect the outcome of a collision between two objects?

A) Mass of the objects
B) Velocity of the objects
C) Elasticity of the collision
D) All of the above

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Explanation: The correct answer is D) All of the above. The outcome of a collision between two objects can be influenced by the mass of the objects, the velocity of the objects, and the elasticity of the collision. These factors affect the total momentum and kinetic energy of the system and can determine whether the collision is elastic or inelastic, and how the objects move after the collision.