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Physics Learning Objects StudentName:SizhuangLiu StudentNumber:20091147 Lab Section:LH2 A Displacementvs.Time graphfora particularsegmentof amediumisshownbelow.Classifythe velocityof eachlabelledpointinto a) Positive: ____ ____ b) Zero: ____ ____ c) Negative: ____ ____ ____ Answer: a) Positive: E F b) Zero:A D c) Negative:BC G Explanation: The velocityisdependsonthe tangentline of the point.The equationisy=kx+b. If k is largerthan zero,the velocityispositive. If k is equal tozero (i.e.astraightline horizontal tothe x-axis),the velocityiszero. If k is smallerthanzero,the velocityisnegative.

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Learning objects

  • 1. Physics Learning Objects StudentName:SizhuangLiu StudentNumber:20091147 Lab Section:LH2 A Displacementvs.Time graphfora particularsegmentof amediumisshownbelow.Classifythe velocityof eachlabelledpointinto a) Positive: ____ ____ b) Zero: ____ ____ c) Negative: ____ ____ ____ Answer: a) Positive: E F b) Zero:A D c) Negative:BC G Explanation: The velocityisdependsonthe tangentline of the point.The equationisy=kx+b. If k is largerthan zero,the velocityispositive. If k is equal tozero (i.e.astraightline horizontal tothe x-axis),the velocityiszero. If k is smallerthanzero,the velocityisnegative.