A) \[4\times {{10}^{-3}}\]
B) \[4\times {{10}^{-2}}J\]
C) \[2\times {{10}^{-3}}J\]
D) \[2\times {{10}^{-2}}J\]
Correct Answer: A
Solution :
Given,\[m=0.4\,\,kg\]and\[v=10\,\,cm/s\] Kinetic energy\[=\frac{1}{2}m{{v}^{2}}(1+1)\] Kinetic energy\[=m{{v}^{2}}\] \[=0.4\times {{(0.1)}^{2}}\] \[=4\times {{10}^{-3}}J\]
You need to login to perform this action.
You will be redirected in
3 sec
