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"Physical Science Test 2 Review": HTML5 Crossword

Across

4. Sum of two or more vectors (9)
5. Rate of doing work (5)
6. Simple machine with rope or cable passing over a wheel (5,3,4)
7. Simple machine similar to an inclined plane that modifies applied force and directs it to the side (5)
13. Center-seeking force causing an object to travel in a curved path (11,5)
16. Velocity at which air resistance stops acceleration of a falling object (8,8)
18. SI unit of work (5)
19. Any variation in the rate of an object's change in position over time (12)
20. Which law of motion states that for every action, there is an equal and opposite reaction (5)

Down

1. Which law of motion states that velocity doesn't change unless acted upon by an external force? (5)
2. Who laid the foundation for modern physical science by discovering gravitation and laws of motion? (3,5,6)
3. Product of an object's mass and velocity (8)
8. How well a machine converts input work to output work (10)
9. Mathematical quantity with only magnitude (6)
10. Distance an object travels per unit of time (5)
11. Which ancient philosopher's teachings dominated science for nearly 2000 years? (9)
12. Branches of physics discovered before 1900 (9,7)
14. Object hanging from fixed point and swinging back and forth due to gravity (8)
15. What is the transfer of energy from one object to another by FORCE? (4)
17. Mathematical quantity with both direction and magnitude (6)

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