Question

A bullet if mass 20 g comes out from barrell if a gun with muzzle velocity of 400m/s. What is its kinetic energy of the bullet

Answer 1

Mass of bulate =20g = 20/1000kg = 0.02kg

v = 400m/s

kinetic energy = mv^2/2

kinetic energy = 0.02*16*10^4/2= 1600j = 1.6 kilo Jule

Answer 2

Answer:

mass of the bullet =20g;velocity =400m/s

Explanation:

Solution:

Kinetic energy =1/2(mv)2

=1/2(20×400)2

=1/2(8000)2

=1/2(16000)

=1/2 ÷ 16000

=8000m/s2

Therefore, the Kinetic Energy of the bullet is 8000m/s2