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## Homework Statement

If a 30 g bullet is shot with a velocity of +300 m/s from a 7.5 kg gun, what is the recoil velocity of the gun?

m1 = 0.03 kg

v1 = 300 m/s

m2 = 7.5 kg

Velocity initial for both objects is 0.0 m/s

## Homework Equations

(m1 + m2)(v) = (m1v1) + (m2v2)

## The Attempt at a Solution

0 = (0.03kg x 300m/s) + (7.5kg x v)

0 = 9kgm/s = (7.5kg x v)

-9kgm/s = 7.5 kg x v

v = -1.2 m/s