"Newton's 2nd Law": HTML5 Crossword

Across

4. Acceleration is measured in meters per second (7)
5. To find the net force of a forward and backward force, you would need to (8)
7. To find the acceleration, you would ____ net force by mass (6)
8. If the mass of an object increases while pulled with the same force, the acceleration (9)
10. Mass is measured in (9)
12. Force of friction of a free falling object (0,3,10)
15. A force caused by a rope, string or wire (7)

Down

1. The push of a surface upward on an object is force (6)
2. If two forces are equal and opposite they are called (8)
3. Force is measured in (7)
6. If two forces are unequal and cause acceleration they are called (10)
9. The pull of the earth on an object is the force of (7)
11. The force that acts opposite of motion (8)
13. If the same mass is pulled with more force, its acceleration would (8)
14. A push or a pull force (7)