What has a greater effect on an object's kinetic energy--increas-
ing its speed by 50 percent or increasing its
mass by 75 percent? Explain.

help plz

Which of the following is a compound? a.carbon b.oxygen c.hydrogen d.water

Which function is performed by earths atmosphere? a. ultraviolet rays are prevented from reaching the ozone layer. b. earths temperature is raised and moderated by trapping in heat c. charged particles from the sun are prevented from reaching earth. d. magnetic charges from space are prevented from reaching earths surface.

Which part of earth’s surface receives the most direct rays from the sun? a) equator b) ocean c) poles d) mountains