Physics

4. The tendency of an object to remain at rest or in uniform motion unless acted upon by an external force.
7. COLLISION A collision in which both momentum and kinetic energy are conserved.
8. The ability to do work or cause a change in a system.
9. OF ENERGY The principle that energy cannot be created or destroyed, only transferred or transformed.
12. PRINCIPLE A change in pressure applied to an enclosed fluid is transmitted undiminished to all portions of the fluid.
13. The rotational equivalent of force, causing an object to rotate about an axis.
14. The rate at which an object changes its position in a specific direction.
16. The product of an object's mass and velocity.
18. A mechanical wave that consists of a series of compressions and rarefactions.

1. The region of space around a mass where another mass experiences a gravitational force.
2. The force applied perpendicular to the surface of an object per unit area.
3. FALL The motion of an object solely under the influence of gravity.
5. A push or pull on an object that causes it to change its state of motion.
6. LAw The relationship between the force applied to a spring and its resulting deformation.
8. A state in which all forces and torques acting on an object cancel out.
10. The change in velocity of an object per unit of time.
11. FRICTION Friction that opposes the motion of an object already in motion.
15. A longitudinal mechanical wave that travels through a medium as variations in pressure.
17. OF INERTIA The rotational analog of mass, determining how an object resists angular acceleration.