A) 1200N
B) 6400 N
C) 1600N
D) 1800N
Correct Answer: B
Solution :
[b] As we know, \[|a|=\left| \frac{{{v}^{2}}-{{u}^{2}}}{2S} \right|=\frac{400}{50}=8\text{ m/}{{\text{s}}^{2}}.\] So force required \[=F=ma\] \[=800\times 8=6400\text{ }N\]
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