Which of the following energy forms is associated with an object due to its position? (1 point)

potential energy
positional energy
total energy
kinetic energy

Question

Which of the following energy forms is associated with an object due to its position?  (1 point)

    potential energy
    positional energy
    total energy
    kinetic energy

anonymous · Answer

Which of the following energy forms is not involved in hitting a tennis ball?  (1 point)

    kinetic energy
    chemical potential energy
    gravitational potential energy
    elastic potential energy

shane_b · Answer

Positional energy and total energy can be ruled out pretty easily.
Now looking at:
$$PE=mgh$$
$$KE=\frac{1}{2}mv^2$$
Which one has a position component?

shane_b · Answer

For the second one just consider each answer:

1) Hitting a tennis ball involves a change in KE since it's velocity will change.
2) It also involves gravitational PE because the ball's position will be influenced by gravity throughout its motion.  
3) It involves elastic potential energy due to the deformation of the ball when it is struck.

So what's left?

anonymous · Answer

what is positional energy? :-/

shane_b · Answer

As far as I can tell, gravitational positional energy is a non-physics term for gravitational potential energy.  It's not a term I've ever used or seen.

anonymous · Answer

im still not sure of the answer

shane_b · Answer

chemical potential energy

anonymous · Answer

Thanx shane