Mathematics · Aptitude
A stone is thrown vertically upwards with a velocity of 20 m/s. At the same instant, a ball is dropped from a point directly above the stone from a height of 40 m. Taking g = 10 m/s2, at what height from the ground will the stone and ball meet, and after how much time?
- 115 m & 1 s
- 25 m & 2 s
- 320 m & 2 s✓
- 420 m & 1 s
Correct answer
20 m & 2 s
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