Answer:
Given \[m=2kg,\,\,F=?,\,\,\,\,S=10m,\,\,\,t=2s\]
We know, \[F=ma\] How to get a ? Now using, \[s=ut+\frac{1}{2}a{{t}^{2}}\Rightarrow \,\,10=\frac{1}{2}\times a\times {{2}^{2}}\] \[\Rightarrow \,\,a=5\,\,m{{s}^{-2}}\] \[\therefore \,\,\,F=2\times 5=10\,\,N.\]
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