Solved UPSC CDS/OTA Question
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Q · Motion in a Straight lineMedium · 45s
A body thrown vertically upwards reaches a maximum height of 45 m. What is its initial velocity? (Take g = 10 m/s²)
TopicMotion in a Straight line
Question Typemultiple choice
DifficultyMedium
Marking+1 / −0.33
Test Duration30 min
Step-by-Step Solution
The complete worked solution.
Every step explained — no skipped algebra.
v² = u² - 2gh ⇒ 0 = u² - 2×10×45 ⇒ u² = 900 ⇒ u = 30 m/s.
Final Answer: Option C — 30 m/s