Physics, asked by sm1710901, 10 months ago

A man wearing a bullet proof vest stand still on roller skates.the total mass is 80 kg A bullet of mass 20 g is fired at 400m /s it is stopped by the vest and falls to the ground what is then the velocity of the man.​

Answers

Answered by i7488404083
4

Answer:

mass of man=80kg

velocity (u)of man=0m/s

mass of bullet=20g=0.02kg

velocity(u) of bullet=400m/s

velocity(v)of bullet=0m/s

To find final velocity of man

m1u1+m2u2=m1v1+m2v2

80×O+0.02×400=80v2+0.02×0

0+8=80v2+0

8=80v2

8/80=V2

1/10=v2

Similar questions