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A body starts moving from rest with constant acceleration covers displacement S 1 in first (p – 1) seconds and S 2 in first p seconds. The displacement S 1 + S 2 will be made in time:

1. (2p 2 – 2p + 1)s
2. (2p + 1)
3. s ) 1 p 2 p 2 ( 2 + −
4. (2p – 1)s

Correct answer: s ) 1 p 2 p 2 ( 2 + −

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