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UPSC 1996: A truck, a car and a motor cycle have equal kinetic energies. If equal stopping ...
(a)x > y > z
(b)x < y < z
(c)x = y = z
(d)x 4y 8z
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Not attemptedCorrect Answer: (a) x > y > z
All three vehicles possess the same kinetic energy (½ mv²). If the *same* retarding (brake) force is applied to each, the heavier truck experiences the smallest deceleration (a = F/m) and therefore takes the longest distance x to stop; the car (intermediate mass) has a shorter distance y, and the light motorcycle stops in the shortest distance z. Thus x > y > z (option a). ([licchavilyceum.com](https://licchavilyceum.com/upsc-civil-services-prelims-1996-solved-question-paper/))
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What is the correct answer to this UPSC 1996 Science & Technology question?▼
The correct answer is option (a): x > y > z. Watch the detailed video explanation in our Sherlocking Prelims course on UnlockIAS.
Which year was this Physics question asked in UPSC Prelims?▼
This question was asked in UPSC CSE Prelims 1996, GS Paper 1, as Question 117. It falls under Science & Technology > Physics.
What is the difficulty level of this UPSC question?▼
This question is rated "moderate". It requires sound conceptual understanding of the topic.
How many UPSC Prelims questions have been asked from Physics?▼
UPSC has asked 104 questions from Physics (under Science & Technology) across multiple years. Visit the topic page to see the full list and year-wise trends.