A block of mass 1 kg moves along a frictionless surface with a velocity of 10 ms-1 and it colides with a stationary block of mass 10 kg. After the collision, the first block rebounds with a velocity of 5 ms-1 and the other one moves off with a velocity of 1.5ms-1.
Correct answer: B. B
- A. A
- B. B
- C. C
- D. D
Explanation
It is a case of inelastic collision. So, momentum is conserved, whereas kinetic energy is not.
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Displacement, velocity and acceleration describe motion, including the horizontal and vertical components of projectile motion. The chapter connects these quantities with Newton's laws, momentum and impulse, then applies conservation of momentum to collisions, distinguishing elastic collisions from inelastic ones.
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