Study the scenario.

A toy is launched horizontally by a spring. Once the toy is moving there is a total of 150 J of energy stored in the isolated system.

How much energy was stored in the system before the spring released the toy?

(A) less than 150 J because an isolated system loses energy as energy is converted from one form to another

(B) more than 150 J because an isolated system gains energy as energy is converted from one form to another

(C) 150 J, because the initial and final energy must be the same in an isolated system

(D) there is no way to tell what happens to the amount of energy in an isolated system unless we know the speed of the toy

Question

Jeffery Gillespie

Physics

11 July, 04:31

Study the scenario.

A toy is launched horizontally by a spring. Once the toy is moving there is a total of 150 J of energy stored in the isolated system.

How much energy was stored in the system before the spring released the toy?

(A) less than 150 J because an isolated system loses energy as energy is converted from one form to another

(B) more than 150 J because an isolated system gains energy as energy is converted from one form to another

(C) 150 J, because the initial and final energy must be the same in an isolated system

(D) there is no way to tell what happens to the amount of energy in an isolated system unless we know the speed of the toy

+2

Answers (2)

Know the Answer?

Nola Freeman · Answer 1

(C) 150 J, because the initial and final energy must be the same in an isolated system

Oh yea ... the Law of Conservation of energy states that energy stays the same throughout a system XD bet

~~You are very welcome,

Sanjith U. "Sun-Chips"

Frances Huff · Answer 2

Option (C)

Explanation:

According to the law of conservation of energy, energy can neither be created nor be destroyed. it can transform from one form to another.

For example, in case of electric bulb, the electrical energy is converted into light energy.

The energy of toy when it is moving is 150 J. It means the energy stored in the system before the launch of toy is also 150 J. It is assumed that there is no loss of energy in another forms.