A) 2N
B) 10N
C) 15N
D) 7N
Correct Answer: C
Solution :
Acceleration of the ball \[a=\frac{{{\upsilon }^{2}}}{2s}=\frac{{{(4)}^{2}}}{2\times 0.4}=20\,\,m/{{s}^{2}}\] Hence, force applied by the man \[=m\,(a+g)\] \[=\frac{1}{2}\,\,(20+10)=15N\]You need to login to perform this action.
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