Question

A bullet of mass 10 gram hits a target and penetrates 2 cm into it. If the
average resistance offered by the target is 100 N then the velocity with
which the bullet hits the target is
1) 10 ms-
1 2 ) 10/2 ms-1 3) 20 ms-1 4) 2012 ms-1​

Answer 1

Answer:

pls mark as brainliest I need to rank up

Answer 2

Answer:

20 m/s

Explanation:

Work done to stop the bullet = F×d

Force 0fered by the target is 100 N

d=  penetrates 2 cm

=100×0.02= 2 J

using work energy theorem

change in kinetic energy = work done

m= 10 gram

0.5(0.001)v^2 = 2

v= 20 m/s