Which spheres of Earth are directly influenced when human-caused air pollution leads to acid rain that dissolves limestone rocks? atmosphere, cryosphere, geosphere
cryosphere, hydrosphere, biosphere
geosphere, atmosphere, hydrosphere
biosphere, atmosphere, cryosphere

Henry, whose mass is 95 kg, stands on a bathroom scale in an elevator. the scale reads 830 n for the first 2.4 s after the elevator starts moving, then 930 n for the next 2.4 s. part a what is the elevator's speed 4.8 s after starting? express your answer with the appropriate units.

Match each scenario to the form of energy it represents

Diego kicks a soccer ball from the end line. his fellow students time and mark the soccer ball as it moves down the field. the graph represents the ball's progress. based on the graph, during what time is the velocity constant and positive?