Linear Momentum and Collisions MCQs | STS IBA FPSC BPSC SPSC PPSC Mcqs Test Preparation
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If two objects collide and one of them is initially at rest, what is true about the total momentum of the system?
A. It is conserved
B. It is not conserved
C. It is lost
D. It doubles
Answer: It is conserved
In a perfectly elastic collision, what is true about the relative velocity of two objects before and after the collision?
A. It is equal in magnitude but opposite in direction
B. It is zero
C. It changes direction
D. It doubles
Answer: It is equal in magnitude but opposite in direction
What determines the final velocities of two colliding objects in an elastic collision?
A. Conservation of momentum and conservation of kinetic energy
B. Only conservation of momentum
C. Only conservation of kinetic energy
D. Initial velocities of the objects
Answer: Conservation of momentum and conservation of kinetic energy
In an inelastic collision, how is the total momentum related to the kinetic energy of the system?
A. Momentum is conserved, but kinetic energy is not
B. Both momentum and kinetic energy are conserved
C. Momentum is not conserved, but kinetic energy is
D. Neither momentum nor kinetic energy is conserved
Answer: Momentum is conserved, but kinetic energy is not
What is true about the relative velocity of two objects before and after an elastic collision?
A. It remains the same in magnitude but opposite in direction
B. It changes in magnitude and direction
C. It becomes zero
D. It increases
Answer: It remains the same in magnitude but opposite in direction
What happens to the kinetic energy in a perfectly inelastic collision?
A. Some kinetic energy is converted into other forms of energy
B. Total kinetic energy is conserved
C. Kinetic energy is doubled
D. Kinetic energy is lost completely
Answer: Some kinetic energy is converted into other forms of energy
When two objects collide and their total momentum is conserved, which type of collision is likely happening?
A. Elastic or inelastic
B. Perfectly inelastic
C. Elastic
D. Explosive
Answer: Elastic or inelastic
In a collision where the objects do not stick together, what type of collision is this?
A. Elastic or inelastic
B. Perfectly inelastic
C. Elastic
D. Explosive
Answer: Elastic or inelastic
When two objects collide elastically, what is true about the kinetic energy of the system?
A. It remains the same before and after the collision
B. It decreases
C. It increases
D. It becomes zero
Answer: It remains the same before and after the collision