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BITSAT 2020
Exam
BITSAT
Year
2020
Subject
Physics
Chapter
Motion in One Dimension

BITSAT 2020 · Physics · Motion in One Dimension

From a 200 m high tower, one ball is thrown upwards with speed of...

From a 200m200 \mathrm{ m} high tower, one ball is thrown upwards with speed of 10ms−110 \mathrm{ ms}^{-1} and another is thrown vertically downwards at the same speeds simultaneously. The time difference of their reaching the ground will be nearest to

Options

  1. A12s12 \mathrm{ s}
  2. B6s6 \mathrm{ s}
  3. C2s2 \mathrm{ s}
  4. D1s1 \mathrm{ s}

Correct answer

C. 2s2 \mathrm{ s}

Step-by-step solution

The ball thrown upward will lose velocity in ls. It return back to thrown point in another 1s1 \mathrm{ s} with the same velocity as second. Thus the difference will be 2s2 \mathrm{ s}.
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