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QJEEM21Ph0698: JEE Main 2021 Physics - Class 11 JEEM21Ph0698 Solution: A bullet of mass 0.1 kg is fired on a wooden block to pierce…

A bullet of mass 0.1 kg is fired on a wooden block to pierce through it, but it stops after moving a distance of 50 cm into it. If the velocity of bullet before hitting the wood is 10 m/s and it slows down with uniform deceleration, then the magnitude of effective retarding force on the bullet is 'x' N. The value of 'x' to the nearest integer is __________.

Step-by-Step Verified Solution

JEE Main 2021 (Online) 18th March Morning Shift Physics - Laws of Motion Question 79 English Explanation

Mbullet = 0.1 kg

V2 = 44 + 2(−a) × 5

⇒ 0 = (10)2 − 2a × (0.5)

Retardation (a)=10002×5 = 100 m/s2

Retarding force (F) = ma = 0.1 × 100

FR = 10 N

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