Linear Momentum and Collisions MCQs | STS IBA FPSC BPSC SPSC PPSC Mcqs Test Preparation
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In a collision, the law of conservation of momentum states that:
A. The total momentum of a closed system remains constant
B. The total energy of a system is constant
C. The kinetic energy is conserved
D. The velocity of each object is conserved
Answer: The total momentum of a closed system remains constant
During a collision, the total momentum of a system of two objects is conserved if:
A. No external forces act on the system
B. External forces are acting on the system
C. The objects have equal masses
D. The collision is perfectly elastic
Answer: No external forces act on the system
In an inelastic collision, the total kinetic energy:
A. Is not conserved
B. Is conserved
C. Increases
D. Decreases but is converted to other forms of energy
Answer: Is not conserved
When a collision is elastic, which of the following quantities is conserved?
A. Both momentum and kinetic energy
B. Only momentum
C. Only kinetic energy
D. Neither momentum nor kinetic energy
Answer: Both momentum and kinetic energy
In a collision, if the kinetic energy is not conserved, the collision is:
A. Inelastic
B. Elastic
C. Perfectly inelastic
D. Explosive
Answer: Inelastic
The impulse experienced by an object is equal to the change in its:
A. Momentum
B. Kinetic energy
C. Acceleration
D. Velocity
Answer: Momentum
Which of the following scenarios describes a perfectly elastic collision?
A. Two objects collide and bounce off each other with no loss of kinetic energy
B. Two objects collide and stick together
C. Two objects collide and lose some kinetic energy
D. Two objects collide and convert kinetic energy into heat
Answer: Two objects collide and bounce off each other with no loss of kinetic energy
In a collision, if the two objects have equal and opposite momenta before the collision, then:
A. The total momentum of the system is zero
B. The total momentum of the system is doubled
C. The total momentum of the system is halved
D. The total momentum of the system is conserved
Answer: The total momentum of the system is zero
If two objects collide and stick together, which type of collision is this?
A. Perfectly inelastic collision
B. Elastic collision
C. Inelastic collision
D. Partially elastic collision
Answer: Perfectly inelastic collision