Linear Momentum and Collisions MCQs | STS IBA FPSC BPSC SPSC PPSC Mcqs Test Preparation
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The momentum of an object is a vector quantity because:
A. It has both magnitude and direction
B. It has only magnitude
C. It has only direction
D. It is a scalar quantity
Answer: It has both magnitude and direction
In a collision where both objects move after the impact, the final velocities are determined by:
A. The conservation of momentum
B. The conservation of energy
C. The change in kinetic energy
D. The change in potential energy
Answer: The conservation of momentum
If a person jumps from a height, the momentum just before hitting the ground is:
A. Greater than the momentum just after hitting the ground
B. Equal to the momentum just after hitting the ground
C. Less than the momentum just after hitting the ground
D. Zero
Answer: Greater than the momentum just after hitting the ground
In a collision between two objects of different masses, the total momentum before and after the collision:
A. Is conserved
B. Increases
C. Decreases
D. Is not well defined
Answer: Is conserved
The impulse-momentum theorem can be used to determine:
A. The change in momentum
B. The force applied during a collision
C. The energy lost during a collision
D. The work done on an object
Answer: The change in momentum
If an object in motion collides with a stationary object, the momentum of the stationary object after the collision will:
A. Be equal to the momentum of the moving object before the collision
B. Be zero
C. Be less than the momentum of the moving object
D. Be greater than the momentum of the moving object
Answer: Be equal to the momentum of the moving object before the collision
If two objects collide and stick together, the collision is:
A. Perfectly inelastic
B. Elastic
C. Inelastic
D. Superelastic
Answer: Perfectly inelastic
In an elastic collision between two identical masses, what happens to the relative velocity of approach and separation?
A. They are equal in magnitude
B. They become zero
C. The relative velocity of separation is less than the relative velocity of approach
D. They are not equal
Answer: They are equal in magnitude
The impulse experienced by an object is the change in:
A. Momentum
B. Kinetic energy
C. Potential energy
D. Velocity
Answer: Momentum