A) 8 N
B) 4 N
C) Zero
D) 2 N
Correct Answer: B
Solution :
\[u=4\ m/s\], \[v=0,\ t=2\sec \] \[v=u+at\] Þ \[0=4+2a\] Þ \[a=-2\,m/{{s}^{2}}\] \[\therefore \] Retarding force\[=ma=2\times 2=4\]N This force opposes the motion. If the same amount of force is applied in forward direction, then the body will move with constant velocity.You need to login to perform this action.
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