A) \[2.5\,m/{{\sec }^{2}}\]
B) \[5.0\,m/{{\sec }^{2}}\]
C) \[10\,m/{{\sec }^{2}}\]
D) None of the above
Correct Answer: A
Solution :
Force on the block F \[=u\ \left( \frac{dm}{dt} \right)=5\times 1=5\ N\] \[\therefore \] Acceleration of block a\[=\frac{F}{m}=\frac{5}{2}=2.5\ m/{{s}^{2}}\]
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