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 the bullet before hitting the wood is 10 m s - 1 an

Question

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 the bullet before hitting the wood is 10 m s - 1 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,

TestHub · Accepted Answer

v 2 = u 2 + 2 a s ⇒ 0 = ( 10 ) 2 + 2 ( - a ) 1 2 ⇒ a = 100 m s - 2 ⇒ F = m a = ( 0 . 1 ) ( 100 ) = 10 N

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