What best describes gravity?
-a molecular pull
-a description of mass
-a kind of acceleration
-a fundamental force

In positive numbers less than 1, the zeros between the decimal point and a non-zero number are blank significant

Use the information presented in the graph to answer the questions. which segments show acceleration? which segment indicates that the object is slowing down? what is the velocity of segment b? what is the acceleration of segment b?

If the work required to stretch a spring 3 ft beyond its natural length is 15 ft-lb, how much work is needed to stretch it 27 in. beyond its natural length?