The distance of through which a stone falls from rest is proportional to the square of the time taken t. if the stone falls 45m in 3 seconds, how far will it fall in 6 seconds? how long will it take to fall 20m?

Extensive and unusual cold snaps have occurred here recently. is this evidence that global warming is lessening or not occurring? no—although the long-term trend is for warming, short-term weather patterns can still be variable. no—melting of glaciers and ice caps is making the oceans cooler, which can cause cold snaps. yes-- if global warming really were occurring, cold snaps wouldn’t happen. yes—due to global warming, weather patterns should be become less—not more—variable.