Answer to Question #154465 in Quantum Mechanics for Erza Scarlet

Question

Hypervelocity bullet used in 0.22 long rifle usually weigh around 2.1 g and can have a speed of 550 m/s. what must be the speed of a 75 kg man to match the momentum of this bullet?

Answer 1

Answer

Using momentum conservation theory

$mv=m'v'$

m,v for man and rest for gun notation.

Putting all given value in question

And then velocity of man is

$v=\frac{m'v'}{m}=\frac{0.0021\times550}{50}\\=0.231m/s$