Question

A bullet of mass 5g travelling at a speed of 120m/s penetrates into a fixed target and comes to rest in 0.01 secs.calculate

Answer 1

Heya,

v=u+at

0=120+a(0.01)

-120/0.01=a

= -12000m/

v2=u2+2as

0=(120)2+2(-12000)s

-14400=-24000s

s=0.6  

F=ma

F=0.005*-12000 =60N

Hope it helped u

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