position B

position A

position C

none of these

before a chemical reaction occurs

after a chemical reaction occurs

when the chemical is being created

none of these

Starting higher up will start them with more potential energy, which is converted to kinetic energy later.

Starting higher up will start them with more kinetic energy.

Starting higher up will start them with more potential energy, which will stay constant as the skiier goes down the slope.

Starting higher up will require less potential energy as the skieer goes down.

the rubber band

the wheels

the cardboard base

the axles

when the balloon is as full as possible without popping

when the balloon pops

when the balloon is blown up a little, but not too much

when the balloon is deflated

the moment that potential energy is no longer at its maximum and begins converting to kinetic energy

the moment that kinetic energy is at its maximum

the moment that potential energy is at its least as its being converted to kinetic energy

the moment that potential and kinetic energy are equal

at the top of a hill

at the bottom of a hill

the energy is the same

position A

position B

position C

none of these

when it is in the air

when it's on the ground

both

neither

when it is stretched out as far as it can go

when it is laying on the table

when it breaks because it was stretched too far

none of these