Pendelums, masses on springs, and childreb swinging on a swings are all forms of

“other instruments such as gravimeters and magnetometers are also used in the search for petroleum. extracting crude oil normally starts with drilling wells into an underground reservoir. when an oil well has been tapped, a geologist (known on the rig as the "mudlogger") will note its presence. “ this is what i found on google i hope it

That would be kinetic energy

That depends on what kind of environ meant it is in  in space it has the same force that was applied when the velocity was gained