Monthly Archive: June 2007

Jun 30

Problem: Dynamics #1

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

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Jun 05

Win rewards for answering science questions.

You can win rewards by helping others by answering their science problems. For more details and for joining free for this noble cause of helping others CLICK HERE.

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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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