Linear Momentum and Collisions MCQs | STS IBA FPSC BPSC SPSC PPSC Mcqs Test Preparation
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In a two-dimensional collision, to find the final velocities of two objects, you need to use:
A. Both conservation of momentum and conservation of kinetic energy
B. Only conservation of momentum
C. Only conservation of kinetic energy
D. The work-energy theorem
Answer: Both conservation of momentum and conservation of kinetic energy
During a collision, if the total energy of the system remains constant, it indicates that:
A. The collision is elastic
B. The collision is inelastic
C. There are no external forces
D. The system is isolated
Answer: The collision is elastic
The final momentum of two objects in a perfectly elastic collision depends on:
A. The masses and initial velocities of both objects
B. Only the masses of the objects
C. Only the initial velocities of the objects
D. The external forces acting on the objects
Answer: The masses and initial velocities of both objects
In a perfectly elastic collision, which of the following is true about the relative velocity of approach and separation?
A. They are equal in magnitude but opposite in direction
B. The relative velocity of approach is greater
C. The relative velocity of separation is greater
D. They are not related
Answer: They are equal in magnitude but opposite in direction
The conservation of momentum principle is derived from which of Newton’s laws?
A. Newton's Third Law
B. Newton's First Law
C. Newton's Second Law
D. Newton's Law of Universal Gravitation
Answer: Newton's Third Law
In a collision between two objects of different masses, the object with the greater mass will experience:
A. A smaller change in velocity
B. A larger change in velocity
C. No change in velocity
D. A change in velocity equal to that of the smaller mass
Answer: A smaller change in velocity
During a collision, if the total momentum of the system is not conserved, it indicates that:
A. External forces are acting on the system
B. The collision is elastic
C. The system is isolated
D. Internal forces are acting on the system
Answer: External forces are acting on the system
The impulse imparted to an object is equal to the:
A. Change in momentum
B. Change in kinetic energy
C. Change in force
D. Change in acceleration
Answer: Change in momentum
In an elastic collision, the relative speed of separation is equal to the:
A. Relative speed of approach
B. Relative speed of impact
C. Sum of the initial velocities
D. Difference of the final velocities
Answer: Relative speed of approach