A SPHERE HAVING MASS 20 KG MOVING WITH A VELOCITY OF 5 METRE PER SECOND COLLIDES WITH ANOTHER SPHERE WHICH IS AT REST AND HAVING MASS 5 KG IF THE FIRST OBJECT COMES TO REST AFTER COLLITION, FIND THE VELOCITY OF THE SECOND SPHERE?.

“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

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Hi. i believe this is called a scientific  theory.cheers!

V=ƒλv= 320 m/shope i can i get brainliest