The formula for potential energy is PE = mgh, where m is mass, g is the acceleration due to gravity, and his height.
What additional trial could
the boys have performed to increase the distance that the block
travelled?

another example of kinetic energy would be,

kinetic energy   >     moving energy

answer   >   letter choice (c),   a hammer falling off a table.

hope that !                                         : )

+15-35=-20

going in opposite directions

= initial pressure

= final pressure = 2

= initial volume

= final volume = /4

= initial temperature = 20 c = 20 + 273 = 293 k

= final temperature = ?

using the equation