Which body is in equilibrium?
(1) a satellite orbiting earth in a circular orbit
(2) a ball falling freely toward the surface of
earth
(3) a car moving with a constant speed along a
straight, level road
(4) a projectile at the highest point in its trajectory

Choose a synonym for the underlined homonym (a word with two or more meanings). i did not expect the boat to rock so much. a. boulder c. astound b. sway d. shock

Which statement is the best definition of an atom? a) anything that has mass and occupies space. b) the smallest particle that has the properties of an element. c) a substance that cannot be broken down chemically into simpler substances. eliminate d) the smallest unit of a substance that exhibits all of the properties characteristic of that substance.

Which of the following is the largest disadvantage of about half of the electricity in the united states comes from burning