A) 2 N
B) 4 N
C) 6 N
D) 10 N
Correct Answer: A
Solution :
Here, \[u=4\text{ }m\text{/}s,\] \[v=0\]and \[t=2\,s\] \[v=u+at\] \[0=4+a\times 2\] \[a=-\frac{4}{2}=-\,2\,m\text{/}s\] Thus, opposing force \[F=ma=2\times 2=4N\] To maintain the speed 4 m/s, a force ( 4 N) is to be applied.You need to login to perform this action.
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