When a $4 \,kg$ rifle is fired, the $10 \,g$ bullet receives an acceleration of $3 \times 10^6 \,cm / s ^2$. The magnitude of the force acting on the rifle (in newton) is ............
When a $4 \,kg$ rifle is fired, the $10 \,g$ bullet receives an acceleration of $3 \times 10^6 \,cm / s ^2$. The magnitude of the force acting on the rifle (in newton) is ............
- A
Zero
- B
$120$
- C
$300$
- D
$3000$
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