Science

5. The gravitational attraction of the mass of the earth, moon, or planet.
8. An interaction between two electric changes.
9. The tendency of a body to float or rise when submerged in a fluid.
12. The vector sum of all forces acting on an object.
15. A contact force that opposes the relative motion between two surfaces sliding past each other.
16. The mechanical force exerted by a magnetic field upon a magnetic pole placed in it.
17. either of two balancing forces causing or tending to cause extension.
18. resistance to motion by bodies that are in rolling contact.

1. The prop. of a body that is a measure of its inertia & that is commonly taken as a measure of the amount of material it contains and causes it to have weight in a gravitational field.
2. Two objects that are not equal of force.
3. a unit of weight or mass.
4. A force that us equal.
6. Friction: Friction that opposes the invitation of motion between 2 surfaces that are in contact and at rest relative to each other.
7. the resistive force exerted by a fluid.
10. The unit of force in the meter-kilogram-second system equal to the force required to impart an acceleration of one meter per second to a mass of one kilogram.
11. The rate of change in velocity w/ respect to time, a change in velocity.
13. Strength or energy exerted or brought to bear: cause of motion or change
14. A property of matter by which it remains at rest or in uniform motion in the same straight line unless acted upon by an external force.
16. A property of a moving body that the body has by virtue of its mass and motion and that is equal to the product of the body's mass and velocity