Forces

2. a force that pulls metal toward a magnet
4. a force exerted by a surface as an object moves across it
7. a support force exerted on an object that is in contact with another stable object
9. a force exerted when an object carries electrical charges
10. a force that is transmitted through a string, rope, cable or wire
11. the size or strength of a force
13. a force exerted by a compressed or stretched spring
14. the net force is equal to zero and the motion is unchanged

1. a force exerted by the moon, Earth or another massively large object attracts another object towards itself
3. the sum of all forces on an object
5. a push or pull
6. the net force is greater than zero, there is a change in motion
8. a frictional force exerted on objects as they travel through the air
12. a force that is applied to an object by a person or another object