Question

A bullet of mass 10g is fired with a velocity of 80m/s. What is the kinetic energy?

Answer 1

Answer:

A bullet of mass 10g is fired with a velocity of 80m/s, the kinetic energy of the bullet is 32J

Explanation:

• Kinetic energy is the energy of a moving body

• for a body of mass (m) moving with velocity (v) kinetic energy is given by the formula

               $KE=\frac{1}{2} mv^{2}$

From the question, it is given that

mass of the bullet $m=10g=0.01kg$

the velocity of the bullet $v=80m/s$

therefore kinetic energy of the bullet,

$KE=\frac{1}{2}*0.01*80*80=32J$