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Physics Review Question Unit: Work and Energy Year: 1997 Question#: 17 Question: Which variable expression is paired with a corresponding unit? (1 ) mass x distance/ time and watt (2 ) mass x distance2/ time and watt (3 ) mass x distance2/ time2 and joule (4 ) mass x distance/ time 3 and joule What is this question really asking? Explanation by: Jennifer I [ Return to question menu ] Answer 1 mass x distance/ time and watt INCORRECT A watt is a joule/second - or - Nm/s - or- Kg*m2/s3 return to top Answer 2 mass x distance2/ time and watt INCORRECT A watt is a joule/second - or - Nm/s - or- Kg*m2/s3 return to top Answer 3 mass x distance2/ time2 and joule CORRECT The joule is a Nm - or - Kg m2/s2 return to top Answer 4 mass x distance/ time3 and joule INCORRECT The joule is a Nm - or - Kg m2/s2 return to top What's this question really asking? What is a watt and what is a joule? return to top |
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