Linear Momentum and Collisions MCQs | STS IBA FPSC BPSC SPSC PPSC Mcqs Test Preparation
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When two objects collide and stick together, the collision is known as:
A. Perfectly inelastic
B. Elastic
C. Inelastic
D. Explosive
Answer: Perfectly inelastic
In an elastic collision between two identical masses, what happens to their relative velocities after the collision?
A. They are exchanged
B. They remain the same
C. They double
D. They become zero
Answer: They are exchanged
The concept of impulse is most closely related to which of the following?
A. Change in momentum
B. Change in velocity
C. Change in force
D. Change in kinetic energy
Answer: Change in momentum
If the initial momentum of a system is zero, what will be the final momentum of the system?
A. Zero
B. Double the initial momentum
C. Equal to the total initial momentum
D. Depends on the type of collision
Answer: Zero
During a collision, the impulse applied to an object is equal to:
A. The change in momentum
B. The change in energy
C. The work done
D. The force times distance
Answer: The change in momentum
In a two-dimensional collision, how many conservation laws are applied?
A. Two (momentum in x and y directions)
B. One (total momentum)
C. Three (momentum, kinetic energy, and force)
D. Four (momentum, kinetic energy, force, and acceleration)
Answer: Two (momentum in x and y directions)
In a collision, if two objects have the same mass but different velocities, what will happen to their final velocities in a perfectly elastic collision?
A. They exchange velocities
B. They retain their initial velocities
C. One object reverses direction and the other continues
D. They move with the average velocity
Answer: They exchange velocities
In an elastic collision, the relative speed of approach is:
A. Equal to the relative speed of separation
B. Greater than the relative speed of separation
C. Less than the relative speed of separation
D. Unrelated to the relative speed of separation
Answer: Equal to the relative speed of separation
The momentum of a single object can be altered by:
A. Applying a force over time
B. Changing its mass
C. Changing its velocity
D. Changing its energy
Answer: Applying a force over time