Linear Momentum and Collisions MCQs | STS IBA FPSC BPSC SPSC PPSC Mcqs Test Preparation
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The momentum of a particle is equal to:
A. The product of mass and velocity
B. The product of mass and acceleration
C. The product of force and time
D. The product of energy and time
Answer: The product of mass and velocity
The momentum of a system of particles is conserved if:
A. The net external force is zero
B. The net internal force is zero
C. The system is in equilibrium
D. The system is not accelerating
Answer: The net external force is zero
The impulse experienced by an object is a product of:
A. Force and time
B. Mass and velocity
C. Kinetic energy and time
D. Momentum and velocity
Answer: Force and time
In a collision, if the total kinetic energy is not conserved, the collision is:
A. Inelastic
B. Elastic
C. Perfectly elastic
D. Superelastic
Answer: Inelastic
In a perfectly elastic collision between two identical masses, what is the relationship between their velocities before and after the collision?
A. They exchange velocities
B. They remain the same
C. One is doubled and the other is halved
D. Both become zero
Answer: They exchange velocities
The total momentum of a system of particles is conserved when:
A. No external force acts on the system
B. There is an internal force
C. The system is accelerating
D. The system is in equilibrium
Answer: No external force acts on the system
The unit of momentum is:
A. Kilogram meter per second
B. Newton meter
C. Joule
D. Newton second
Answer: Kilogram meter per second
In a collision between two objects of equal mass where one object is initially at rest, if the collision is perfectly elastic, what happens to the velocities of the two objects after the collision?
A. They swap velocities
B. Both objects stay at rest
C. Both objects move with the same velocity
D. One object continues moving with its initial velocity
Answer: They swap velocities
In an inelastic collision, which of the following quantities is not conserved?
A. Kinetic energy
B. Momentum
C. Energy
D. Momentum is conserved
Answer: Kinetic energy