1. Sci. 1-2 What is a Force?
Pages 11-14

2. Force- a push or pull.
Forces have size and direction.

3. B. Newton- the SI unit for force. More Newtons = more force

4. C. Net force- force that results from combining all the forces exerted on an object.

5. 1) Same direction- add them together
25N N = 45 N to the right
2) Different directions- subtract the smaller force from the larger force
10N N
12N – 10N = 2N to the right

6. D. Unbalanced forces produce a change in motion.

7. E. Balanced forces produce no change in motion
E. Balanced forces produce no change in motion. The net force equals zero.