A) \[80\,m/s\]
B) \[56\,m/s\]
C) \[44\,m/s\]
D) \[40\,m/s\]
Correct Answer: B
Solution :
\[a=\frac{QE}{m}=\frac{3\times {{10}^{-3}}\times 80}{20\times {{10}^{-3}}}=12\,m/se{{c}^{2}}\] Hence v = u + at Þ v = 20 + 12 ´ 3 = 56 m/s.You need to login to perform this action.
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