Warm air and water rise because...

Students design a model roller-coaster track. they place a rubber ball at the highest point on the track and let it go. the ball rolls along the track pulled only by the force of gravity. eventually, it comes to a stop. which change to the design will result in the ball moving the greatest distance?

The combining of light nuclei is called blank. blank as in not actually blank. you know what im tryin to say.

Often called simply "velocity," this is the velocity of an object at a particular moment in time.