JEE Previous Year Question

A bullet of mass $0.1\text{kg}$ is fired on a wooden block to pierce through it, but it stops after moving a distance of$50\text{cm}$into it. If the velocity of bullet before hitting the wood is $10m/s$ and it slows down with uniformdeceleration, then the magnitude of effective retarding force on the bullet is $\text{’}x\text{’}N$. The valueof $\text{’}x\text{’}$ to the nearest integer is$\text{\_}\text{\_}\text{\_}\text{\_}\text{\_}$

Topic: JEE PYQ

Answer: 10. Full step-by-step solution below.