Which statement (s) accurately describe the conditions immediately before and after the firecracker explodes:

I. The total kinetic energy of the fragments is equal to the original kinetic energy of the firecracker.

II. The total momentum of the fragments is equal to the original momentum of the firecracker.

a. Both Statement I and Statement II

b. Neither statement is true.

c. Statement II only

d. Statement I only

Question

Physics

Sean Weeks

11 March, 02:28

Which statement (s) accurately describe the conditions immediately before and after the firecracker explodes:

I. The total kinetic energy of the fragments is equal to the original kinetic energy of the firecracker.

II. The total momentum of the fragments is equal to the original momentum of the firecracker.

a. Both Statement I and Statement II

b. Neither statement is true.

c. Statement II only

d. Statement I only

+4

Answers (1)

Know the Answer?

Dalia Mullen · Answer 1

Option C, The total momentum of the fragments is equal to the original momentum of the firecracker.

Explanation:

Kinetic energy of cracker cannot remain constant before and after explosion. It is so because in the process of burning and bursting some amount of kinetic energy is lost in the form of light and heat energy. While the total mass before and after the explosion remains constant due to which the momentum is conserved before and after the explosion

Hence, option C is correct