If a body of mass 2 kg moves with 15 m/s collides with stationary body of same mass then after elastic collision second body will move with velocity of:
Correct answer: A. 15 m/s
- A. 15 m/s
- B. 2 m/s
- C. 30 m/s
- D. 0 m/s
Explanation
In an elastic collision involving two bodies of equal mass, the moving body transfers its velocity to the stationary body. Therefore, after the collision, the stationary body will move with the same velocity as the original moving body, which is 15 m/s. This adheres to the conservation of momentum and kinetic energy principles. The other options are incorrect as they do not satisfy these principles.
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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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