Question

a bullet of mass 40 g has its kinetic energy equal to 300J. Find the speed of the bullet.​

Answer 1

its somth btw i dont know

Answer 2

Answer:

$ke = \frac{1}{2} m {v}^{2}$

Mass of bullet = 40g= (40/1000) kg=(4/100)kg

Kinetic Energy = 300J

K.E =

$300 = \frac{1}{2} ( \frac{4}{100} ) {v}^{2} \\ {v}^{2} = 15000 \\ v =122.7 \frac{m}{s}$