1. Which of the following quantities is always conserved in a collision (assuming no external forces)?

A.Kinetic Energy
B.Momentum
C.Velocity
D.Acceleration

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2. In a perfectly inelastic collision, the colliding bodies:

A.Bounce off each other with the same speed
B.Stick together and move as one
C.Explode after impact
D.Come to rest immediately

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3. Two balls of equal mass undergo an elastic head-on collision. If the first ball was moving and the second was at rest, what happens after the collision?

A.Both balls move together
B.The first ball stops and the second moves with the first’s velocity
C.Both continue with half the velocity
D.Both come to rest

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4. In an elastic collision, which of the following is conserved?

A.Only momentum
B.Only kinetic energy
C.Both momentum and kinetic energy
D.Neither momentum nor kinetic energy

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5. A 2 kg ball moving at 3 m/s collides elastically with a stationary 1 kg ball. After the collision, the 2 kg ball moves at 1 m/s. What is the velocity of the 1 kg ball?

A.5 m/s
B.4 m/s
C.2 m/s
D.3 m/s

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6. A bullet of mass 0.01 kg moving at 500 m/s embeds into a block of mass 2 kg initially at rest. What is the final velocity of the system (bullet + block)?

A.2.5 m/s
B.1.5 m/s
C.5 m/s
D.10 m/s

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7. In a 2D collision, if object A moves east and object B moves north, and they stick together after colliding, what kind of collision is this?

A.Elastic
B.Sticky
C.Inelastic
D.Perfectly Inelastic

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8. A 4 kg object moving at 3 m/s collides elastically with a 2 kg object at rest. What is the velocity of the 4 kg object after collision?

A. 1 m/s
B. 0.5 m/s
C. 2 m/s
D. 1.5 m/s

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9.A collision is said to be superelastic when:

A. Kinetic energy is conserved
B. Kinetic energy increases after collision
C. Momentum is not conserved
D. Bodies merge after collision

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10.Two bodies of masses 3 kg and 2 kg move toward each other with speeds 4 m/s and 6 m/s, respectively. What is their velocity of approach before collision?

A. 2 m/s
B. 5 m/s
C. 10 m/s
D. 0 m/s

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