Question

3. An explosion of gas from a Hawaiian volcano blows a bunch of rocks into the sky. Each has 2000J of
kinetic energy. Find the mass, to the nearest 0.001kg if its velocity is 32m/s.​

Answer 1

Answer: 3.906kg

Explanation:

K.E = 2000J

V = 32m/s

m =?

K.E = 1/2MV2

2000 = 1/2M x (32^2)

2000 = 1/2M x 1024

2000 = 512M

M = 2000/512

M = 3.906kg