Linear Momentum and Collisions MCQs | STS IBA FPSC BPSC SPSC PPSC Mcqs Test Preparation
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In an elastic collision, which quantity 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 perfectly inelastic collision, the maximum amount of kinetic energy is:
A. Converted into other forms of energy
B. Conserved
C. Increased
D. Doubled
Answer: Converted into other forms of energy
Which of the following statements is true for a perfectly elastic collision?
A. Both momentum and kinetic energy are conserved
B. Momentum is conserved, but kinetic energy is not
C. Kinetic energy is conserved, but momentum is not
D. Neither momentum nor kinetic energy are conserved
Answer: Both momentum and kinetic energy are conserved
If the momentum of an object changes, what must have occurred?
A. An impulse
B. No change in force
C. An increase in mass
D. A decrease in velocity
Answer: An impulse
During an elastic collision, the total momentum of the system is:
A. Conserved
B. Increased
C. Decreased
D. Zero
Answer: Conserved
In a two-dimensional collision, the conservation of momentum must be applied in:
A. Both x and y directions
B. Only the x direction
C. Only the y direction
D. The direction of the impact
Answer: Both x and y directions
In a collision where total momentum is conserved, the total kinetic energy:
A. May or may not be conserved depending on the type of collision
B. Is always conserved
C. Is always lost
D. Is always gained
Answer: May or may not be conserved depending on the type of collision
If two objects collide and stick together, what is the type of collision?
A. Perfectly inelastic
B. Elastic
C. Inelastic
D. Explosive
Answer: Perfectly inelastic
Which equation represents the conservation of momentum in a two-object system?
A. m1 * v1 + m2 * v2 = (m1 + m2) * v
B. m1 * v1 + m2 * v2 = m1 * v1' + m2 * v2'
C. m1 * v1 – m2 * v2 = m1 * v1' + m2 * v2'
D. m1 * v1 = m2 * v2
Answer: m1 * v1 + m2 * v2 = m1 * v1' + m2 * v2'