A particle moving with a constant acceleration describes in the last second of its motion 36% of the whole distance…..

Q. A particle moving with a constant acceleration describes in the last second of its motion 36% of the whole distance. It is starts from rest, how long is the particle in motion and through what distance does it moves if it describes 6 cm in the first sec.?

(a) 5s; 150 cm

(b) 10s; 150 cm

(c) 15s; 100 cm

(d) 20s; 200 cm

Ans:(a)

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