Linear Momentum and Collisions MCQs | STS IBA FPSC BPSC SPSC PPSC Mcqs Test Preparation
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In an inelastic collision, what happens to the kinetic energy of the system?
A. Some is converted into other forms of energy
B. It is conserved
C. It increases
D. It remains constant
Answer: Some is converted into other forms of energy
When two objects with different masses collide elastically, which of the following is true about their velocities after the collision?
A. The relative velocity remains constant
B. The velocities are exchanged
C. The more massive object has a larger velocity
D. The less massive object has a larger velocity
Answer: The relative velocity remains constant
When two objects collide elastically, which of the following is true about their relative velocities?
A. The relative velocity remains the same before and after the collision
B. The relative velocity doubles
C. The relative velocity becomes zero
D. The relative velocity is halved
Answer: The relative velocity remains the same before and after the collision
If two objects collide and their combined momentum before the collision is zero, the combined momentum after the collision will be:
A. Zero
B. Equal to the momentum of one object
C. Double the initial momentum
D. Equal to the total initial momentum
Answer: Zero
The change in momentum is equivalent to which of the following?
A. Impulse
B. Force
C. Work
D. Energy
Answer: Impulse
In a two-dimensional collision, momentum must be conserved separately in:
A. Each direction (x and y)
B. The direction of the collision
C. The x direction only
D. The y direction only
Answer: Each direction (x and y)
In an elastic collision, the relative speed of approach is equal to the:
A. Relative speed of separation
B. Sum of the individual speeds
C. Difference between the individual speeds
D. Average speed of the two objects
Answer: Relative speed of separation
Which of the following statements is true about a perfectly elastic collision?
A. Both momentum and kinetic energy are conserved
B. Only momentum is conserved
C. Only kinetic energy is conserved
D. Neither momentum nor kinetic energy is conserved
Answer: Both momentum and kinetic energy are conserved
What happens to the total kinetic energy in an 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. Energy is completely lost
Answer: Some kinetic energy is converted into other forms of energy