A bullet moving with a speed of `100 ms^(-1)` can just penetrate into two planks of equal thickness. Then the number of such planks, if speed is doubled will be .

A bullet moving with a speed of 100 ms^1 can just penetrate two planks of equal thickness. Then, the number of such planks penetrated by the same bullet when the speed is doubled will be

A bullet moving with a speed of 100 m/s can just penetrate two planks of equal thickness. Now if speed is doubled, then number of such planks required to stop the bullet will be

A bullet moving with a speed of 100 m/s can just penetrate two planks of equal thickness. Now if the speed is doubled, then the number of such planks required to stop the bullet will be

A bullet moving with a speed 'v' can just penetrate two planks of equal thickness. Number of such planks that the bullet will penetrate if its speed is doubled, is:

A bullet of mass 0.02 kg is moving with a speed of 10 ms^(-1). It can penetrate 10 em of wooden block, and comes to rest. If the thickness of the target would be 6 cm only find the KE of the bullet when it comes out

A bullet moving with a speed of 150 ms^(-1) strikes a wooden plank. After passing through the plank its speed becomes 125 ms^(-1) . Another bullet of the same mass and size strikes the plank with a speed of 90 ms^(-1) . Its speed after passing through the plank would be:

A bullet of mass 20 g moving with a speed of 500 cm*s^(-1) is just able to pierce a plank 5 cm thick. Calculate its velocity ,when the same bullet penetrates through the same plank 1 cm thick.

A bullet of mass 100gm moving with a velocity of 100ms^(-1) just pierces through a plank of 100cm thick.If it is 50cm thick it emerges with a velocity

A bullet, moving with a speed of 150(m)//(s) , strikes a wooden plank. After passing through the plank, its speed becomes 125(m)//(s) . Another bullet of the same mass and size strikes the plank with a speed of 90(m)//(s) . Its speed after passing through the plank would be