Home
Class 11
PHYSICS
. A bullet moving with a velocity of 200...

. A bullet moving with a velocity of 200 cm / s penetrates a wooden block and comes to rest after traversing 4 cm inside it. What velocity is needed for travelling distance of 9cm in same block

A

100 cm/s

B

136.2 cm/s

C

300 cm/s

D

250 cm/s

Text Solution

Verified by Experts

The correct Answer is:
C
`v^2 = u^2 - 2as rArr u^2 = 2as `
`rArr u^2 prop s rArr (u^2)/(u_1) = (s_2/s_1)^(1//2)`
`rArr u_2 = (9/4)^(1//2) u_1 = 3/2 u_1 = 300cm/s`
Promotional Banner

Similar Questions

Explore conceptually related problems

A bullet of mass 0.1Kg moves with velocity 10 m/s it strikes a block and comes to rest after travels 0.5 m inside block. Find retardation of bullet

If a bullet of mass 5gm moving with velocity 100m//sec, penertates the wooden block upto 6cm. Then the average force imposed by the bullet on the block is

A bullet moving with an initial velocity of 20 m s^(-1) , strikes a target and comes to rest after penetrating the target to a distance of 10 cm. Calculate the retardation caused by the target.

A bullet of mass 0.04 kg moving with a speed of 600 m/s penetrates a heavy wooden block. It stops after a penetration of 500 cm. The resistive force exerted by the block on the bullet is

A bullet of mass 10g travelling horizontally with a velocity of 150 ms^(-1) strikes a stationary wooden block and come to rest in 0.03 s . Calculate the distance of penetration of the bullet into the block. Also, Calculate the magnitude of the force exerted by the wooden block on the bullet,

A bullet of mass m moving with velocity v strikes a suspended wooden block of mass M . If the block rises to a height h , the initial velocity of the block will be (

A bullet of mass 10 g moving with a velocity of 400 m/s gets embedded in a freely suspended wooden block of mass 900 g. What is the velocity acquired by the block ?