Question

A bullet loses 25% of its initial kinetic energy after penetrating through a distance of 2cm in
a target. The further distance it travels before coming to rest is
1) 1 cm
2) 2 cm
3) 8/3 cm
4)6cm​

Answer 1

Answer:

answer is 6 cm

Explanation:

for solution se the pic

Answer 2

ans is 6 cm

.ek to bht bada tarika hai ise solve krne ka

ek concept hai

dekho

2 cm penetrate krne mein vo 25% energy ka loss kr deti hai

to let kro ki 100% energy ka loss x distance or aage chalkr kr loss kr degi vo.

matlb finally x distance or chalkr vo ruk gai bullet.

see

by unitary method,

25% K.E ------>2 cm

***(bachi kitni --->75%)***

1% K.E ------> 2

25

75% K.E -----> 2*75. = 6cm

25

therefore 75%(jo usme bachi thi 2 cm penetrate krne k baad) usko loss krne liye use

6cm or chalna padega......

hope you got that

Khushi here ✔️✌