What force is Catalina exerting on her bike, if she pushes it 15 meters for 30 seconds, and transfers 40 watts of power to the bike?
1. 20 newtons
2. 40 newtons
3. 60 newtons
4. 80 newtons
What is the mass of a garbage truck moving at 2 meters per second and having a kinetic energy of 5,000 joules?
1. 1,250 kilograms
2. 2,500 kilograms
3. 5,000 kilograms
4. 20,000 kilograms
At what height on a bookshelf is a science book which has a mass of 5 kilograms and a potential energy of 98 Joules?
1. 1 meter
2. 2 meters
3. 3 meters
4. 4 meters
2007-01-25
15:10:00
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1 answers
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asked by
Anonymous