What kinetic energy will a bullet emitted from a gun have if its velocity at exit is 600 m / s and its mass is 9 g?

V = 600 m / s.

m = 9 g = 0.009 kg.

Ek -?

The kinetic energy of the body Ek is a scalar physical quantity, the value of which is equal to half the product of the body’s mass m by the square of its velocity V: Ek = m * V ^ 2/2.

The kinetic energy of the body Ek shows what kind of mechanical work A can be performed by the moving body.

Ek = 0.009 kg * (600 m / s) ^ 2/2 = 1620 J.

Answer: the bullet that flew out of the gun has a kinetic energy Ek = 1620 J.