an object is released from rest high above the surface of the earth. when it has fallen halfway to the surface, its kinetic energy is . after it has fallen twice as far, just before it hits the surface of the earth, its kinetic energy is .

Keep your choice of a major there is probably no single correct choice. a ) to yourself. b) in perspective. c) based solely on the expectations of others. d) all of the answer choices are correct.

Nathan is an ecologist. he’s studying the effect of secondary consumers on primary consumers. his current research focuses on a population of blue jays and crows. they eat caterpillars and mice. if the number of blue jays increases, what are the likely effects on other populations? 1the number of crows will increase. 2the number of mice will decrease. 3the number of mice will remain the same. 4the number of caterpillars will decrease.

Ricks boss often appriciates him for his work.how is rocks boss affecting his proformence