A. Fill in the blanks.
1. Pressure is____per unit____.
2. The unit of pressure is______.
3. The device used to measure air pressure is called________.
4._______and_______are contact forces.
5. Gravity is a______force
6. Force can change the direction of_______of ___________an object.
7. A blunt knife will exert______
of an object.
Answers
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Answer:
- Force per unit area
- pascal (Pa)
- Barometer
- Friction and Tension
- Non contact
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