Apillow , a textbook and a paper airplane are dropped from the top of a tall building at the same time. consider what you have learned about air resistance . which object reaches the ground first ?

The textbook because it’s really heavy

“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