When the two balls collide with each other, some of the upward motion of the lower ball is transferred to the upper one. So the upper ball rebounds not just with its normal (hitting the floor ...

STANTON, Neb. (KTIV) - There were crashes reported throughout Siouxland Tuesday after winter weather began hitting the area, and one of those crashes involved two semis in Northeast Nebraska.

By Sara Ruberg Two people were killed when two small planes collided in midair near a regional airport in southern Arizona on Wednesday morning, officials said. The planes, a Cessna 172S and a ...

At least two people were killed when two small planes collided midair near an airport in Tucson, Arizona. The National Transportation Safety Board is investigating the incident. This marks the ...