A cricket ball of mass 0.15 kg is thrown horizontally at 30 m/s from the top of a building.
What is the ball's kinetic energy as it leaves the hand?
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Correct answer: (C) 67.5 J
RRB JE · Mathematics
Time, Speed & Distance Previous Year Questions (page 2)
52 Time, Speed & Distance (Mathematics) questions asked in RRB JE previous year papers, each with the correct answer and explanation. Read them free on UTpaper, or attempt the full papers as timed online tests.
- 52 questions
- Official answer key
- Free
Other Mathematics topics
If a material has an absolute refractive index of 1.7, what does this imply about the
speed of light in that material compared to vacuum?
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Correct answer: (D) Light travels 1.7 times slower in the material than in vacuum.
How to use these RRB JE Mathematics questions
Every question here was asked in a real RRB JE paper; the paper and shift are shown on the card, and the number opens the question on its own page. Try each one before tapping Show answer, then attempt the full RRB JE papers as timed tests to check your speed under exam conditions.