A) 30 cm
B) 20 cm
C) 10 cm
D) 5 cm
Correct Answer: C
Solution :
Given \[S=30\,cm=30\times {{10}^{-2}}m\]and loss in velocity is 50% Equation of motion \[{{v}^{2}}={{u}^{2}}+2as\] Here, \[\frac{{{u}^{2}}}{4}={{u}^{2}}+2a\times 30\times {{10}^{-2}}\] ?(i) \[0=\frac{{{u}^{2}}}{4}+3a\times x\] ?(ii) On solving Eqs. (i) and (ii), we get \[x=10\,cm\]You need to login to perform this action.
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