A) 150N
B) 3N
C) 30N
D) 300N
Correct Answer: C
Solution :
| [c] This is the question based on impulse-momentum theorem. |
| \[|J|=|F.\Delta t|=|Change\text{ }in\text{ }momentum|\] |
| \[\Rightarrow \] \[F\times 0.1=|{{p}_{f}}-{{p}_{i}}|\] |
| As the ball will stop after catching. |
| \[\therefore \] \[{{p}_{i}}=m{{v}_{i}}=0.15\times 20=3,\text{ }{{p}_{f}}=0\] |
| \[\Rightarrow \] \[F\times 0.1=3\Rightarrow F=30\text{ }N\] |
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