Linear Momentum and Collisions MCQs | STS IBA FPSC BPSC SPSC PPSC Mcqs Test Preparation
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The momentum of a system of two objects before and after a collision is:
A. Equal if no external forces are acting
B. Equal if external forces are acting
C. Always doubled
D. Always halved
Answer: Equal if no external forces are acting
In a collision where two objects of different masses collide, 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. The same change in velocity as the smaller mass
Answer: A smaller change in velocity
Which of the following best describes an inelastic collision?
A. Objects stick together and kinetic energy is not conserved
B. Objects bounce off each other and kinetic energy is conserved
C. Objects exchange velocities and kinetic energy is conserved
D. Objects move with the same velocity and kinetic energy is increased
Answer: Objects stick together and kinetic energy is not conserved
In a perfectly inelastic collision, the final velocity of the combined mass is:
A. Equal to the average of their initial velocities
B. Equal to the initial velocity of the more massive object
C. Equal to the initial velocity of the less massive object
D. Equal to the common velocity they share after the collision
Answer: Equal to the common velocity they share after the collision
In an elastic collision, what happens to the total kinetic energy of the system?
A. It remains constant
B. It decreases
C. It increases
D. It is converted to potential energy
Answer: It remains constant
In a collision, the quantity that measures the change in an object’s motion is:
A. Impulse
B. Force
C. Work
D. Power
Answer: Impulse
Which type of collision results in the maximum loss of kinetic energy?
A. Perfectly inelastic collision
B. Elastic collision
C. Inelastic collision
D. Superelastic collision
Answer: Perfectly inelastic collision
What is the momentum of an object with a mass of 5 kg and a velocity of 10 m/s?
A. 50 kg·m/s
B. 5 kg·m/s
C. 10 kg·m/s
D. 100 kg·m/s
Answer: 50 kg·m/s
Which of the following quantities is conserved in all collisions?
A. Momentum
B. Kinetic energy
C. Potential energy
D. Mechanical energy
Answer: Momentum