Question
For each of the following situations identify what energy transformation is taking place.
(a) A child jumps out of a tree and lands on a trampoline. Consider “initial” to be the moment when they have left the tree and “final” to be the moment when they are brought to rest the first time by the trampoline (i.e. before the first bounce).
(b) An airplane is landing on a short landing strip in the wilderness. It touches down and a hook on its tail catches an “arrestor cable”. The arrestor cable is basically a big spring. The plane’s brakes have failed but it is still brought to rest by the arrestor cable. Consider “initial” to be the moment when the plane touches down and “final” to be the moment when it is brought to rest.
(c) A model rocket is at rest on its launch pad. Its engine ignites and it zooms off into the sky.
Consider “initial” to be when the rocket is stationary on the launch pad and “final” to be the moment when the rocket is at maximum height.
(a) A child jumps out of a tree and lands on a trampoline. Consider “initial” to be the moment when they have left the tree and “final” to be the moment when they are brought to rest the first time by the trampoline (i.e. before the first bounce).
(b) An airplane is landing on a short landing strip in the wilderness. It touches down and a hook on its tail catches an “arrestor cable”. The arrestor cable is basically a big spring. The plane’s brakes have failed but it is still brought to rest by the arrestor cable. Consider “initial” to be the moment when the plane touches down and “final” to be the moment when it is brought to rest.
(c) A model rocket is at rest on its launch pad. Its engine ignites and it zooms off into the sky.
Consider “initial” to be when the rocket is stationary on the launch pad and “final” to be the moment when the rocket is at maximum height.