Solved UPSC CDS/OTA Question
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Q · Motion in a Straight lineMedium · 45s
A car moving in a straight line stops in 10 s after brakes are applied. Initial speed is 20 m/s. Distance covered before coming to rest is:
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.
s = ut + (1/2)at²; a = -2 m/s² ⇒ s = 20×10 + 0.5×(-2)×(10)² = 100 m.
Final Answer: Option B - 100 m