Question

The total energy in a system is 675 J. The kinetic energy changes from 296 J to 432 J. Which statement best describes the potential energy of this system?

It changes from 296 J to 432 J.

It changes from 379 J to 243 J.

It changes from 432 J to 296 J.

It changes from 243 J to 379 J.

Answer 1

It changes from 379 J to 243 J.

Step-by-step explanation:

Answer 2

By definition, the Total energy is given by:

`image`

Where,

U: potential energy

K: kinetic energy

We look for the value of the potential energy for the different values of the kinetic energy.

We have then:

For K = 296:

`image`

For K = 432:

`image`

Therefore, the change in power power is from 379 J to 243 J

Answer:

It changes from 379 J to 243 J.