Question

a particle moves in a straight line with constant acc of changes its velocity froom 10 to 20 m/s after travelling a distance of 135m an t sec . find t

Answer 1

Answer:

9 sec

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Answer 2

Answer:

Explanation:

u=10m/s,v=20m/s,x=130m

a = v-u / t = 20-10 / t = 10/t

s = ut + 1 / 2 at ^ 2

= 135=10t+ 1 / 2 10/t t^2

= t = 9 s

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