Question

please answer it first​

Answer 1

h = ut-1 gt^2

2

100 =60×t-5t^2

20 =12t-t^2

t^2-12t+20=0

t^2-10t-2t+2 =0

t(t-10)-2(t-10=0

ans= t-10,t-2

Answer 2

Answer:

sarange army

answer this

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