give one word answer.
1... Which instrument is used to measure friction?
2... Which term is used to describe the shape of an aircraft?
3... What is the force that opposes the motion of a body?
4... Which type of friction acts between the floor and rollers of a suitcase as it is pulled on the floor?
5... What is the frictional force exerted by air, Water or other gases or liquids called?
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1
1 nanotribometer
2 aerofoils
3 frictional force
4 rolling friction
5 drag
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