A) 15m
B) 20m
C) 25m
D) 30m
Correct Answer: C
Solution :
\[\operatorname{S}=ut+\frac{1}{2}g{{t}^{2}}\] \[\operatorname{S}=5{{t}^{2}}\] \[{{\operatorname{S}}_{1}}\left( t=3s \right)=5\times {{3}^{2}}=45\] \[{{\operatorname{S}}_{2}}\left( t=2s \right)=5\times {{2}^{2}}=20\] \[{{\operatorname{S}}_{1}}-{{S}_{2}}=45-20=25m\]You need to login to perform this action.
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