A stone thrown vertically upwards from the Earth’s surface travels until a height of h and falls back to its original position. If air resistance can be ignored, which graph below best represents the change of force, F which acts on the stone with its distance travelled, s?A.C.B.D.SolutionShow solution >> The answer is D. Because the stone is thrown upwards, the gravitational field strength of

# Monthly Archive: June 2007

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Jun 05

## Win rewards for answering science questions.

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Jun 02

## Problem: Measurements #1

x1, y1 and x2, y2 are two sets of values that are related according to the following equation:The points (x1, y1) and (x2, y2) lie on the graphA. C. B. D. SolutionShow solution >>The answer is C.The above equation can be rearranged in this way:When xy = k, that means y is inversely proportional to x. The graph y versus x will be like the one in C. Hide solution <<Question source:

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