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문제

Write a function P6:

  • There are two objects A, B on a line and a wall is placed at left. A is closer than B to the wall. Initially, A and B are static and each has 1 kg, $n$ kg. Suddenly, B moves toward A with speed 1 m/s and collides. The collision is elastic.
  • input parameter: a positive integer $n$ ($n \le 10^6$)
  • return value: the collision number between A and B or A and wall
  • Hint: When two objects with mass $m_1$ and $m_2$ collide with the initial velocity (not speed) $v_{1i}$ and $v_{2i}$, the final velocity $v_{1f}$ and $v_{2f}$ satisfy the equation $m_{1}v_{1i} + m_{2}v_{2i} = m_{1}v_{1f} + m_{2}v_{2f}$. And in elastic collision, the kinetic energy is conserved.

출처

High School > 한국과학영재학교 > 2021 Spring CS1 Final Mock Exam 6번

  • 문제를 만든 사람: tbn23

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PyPy3

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