Question

A bullet of mass 20 gram moves with speed 10m/s is blocked by metal of thickness 20 cm . Find the registered force. ​

Answer 1

Answer:

m=20g,u=1m/s,v=?

S=20×10

−2

m

a=

20×10

−3

−2.5×10

−2

m/s

2

v

2

=u

2

+2as

v

2

=1−2×

20×10

−3

2.5×10

−2

×

100

20

v=

2

1

≃0.7m/s

Answer 2

Answer:

0.7m/s is the correct answer