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Subject :NSO    Class : Class 9

star_opt.jpeg A particle is moving in a straight line with initial velocity u and uniform acceleration f. If the sum of the distances travelled in tth and (t + 1)th seconds is 100 cm, then its velocity after t seconds in cm/s is

(A) 20

(B) 30

(C) 50

(D) 80.
explanation please

Ans 1:

Class : Class 9

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