Question

A metal ball is placed in a device with a spring that has been compressed past its equilibrium point so that when the spring is released, it will propel the ball into the air. The device is set up on a table one meter above the floor. Which components make up the initial energy of the system?

A) spring potential energy and kinetic energy

B) kinetic energy, spring potential energy, and gravitational potential energy

C) gravitational potential energy only

D) spring potential energy and gravitational potential energy

Answer 1

no K.E. until the ball is moving

Answer 2

The answer is D, "spring potential energy and gravitational potential energy". Here are the answers for the following questions:
2. 490 joules
3. 75 joules
4. 650 joules
5. thermal energy
Hope this helps! :)

Answer 3

jenna is 100% correct

Answer 4

Thanks Jenna