Question

a bullet of mass 0.05kg is fired from a rifle with a velocity of 800m/s After passing through a wall of thickness 1m it's velocity reduces to 200m/s find the resistive force of the wall?​

Answer 1

Explanation:

KE before collision = 4000J

KE after collision = 1000J

ΔKE =3000J= Work

work. =F *S

3000 =F*1

3000 N=F

resistive force is=3000