PS CH 12 S 1,2,3 Vocabulary
- 1. a push or pull that acts on an object
A) force
B) momentum
C) energy
D) power
- 2. the SI unit for force, equal to the force that causes a 1 kilogram mass to accelerate at a rate of 1 meter per second squared
A) Watt
B) kilogram
C) Newton
D) Joule
- 3. the overall force acting on an object after all the forces are combined
A) gross force
B) conserved force
C) net force
- 4. a force that opposes the motion of objects that touch as they move past each other
A) friction
B) potion
C) momentum
D) reaction
- 5. a friction force that acts on objects that are not moving
A) potential friction
B) kinetic friction
C) sliding friction
D) static friction
- 6. a friction force that opposes the motion of an object as it slides over a surface
A) moving friction
B) rolling friction
C) sliding friction
D) potential friction
- 7. a friction force that acts on rolling objects, caused by the change in shape at the point of rolling contact
A) traction friction
B) rolling friction
C) static friction
D) sliding friction
- 8. a friction force that opposes the motion of an object through a fluid
A) flowing friction
B) fluid friction
C) kinetic friction
D) viscous friction
- 9. fluid friction acting on an object moving through the air
A) projectile motion
B) air resistance
C) terminal velocity
D) gravity
- 10. the attraction between any two objects because of their masses
A) magnetism
B) adhesion
C) surface tension
D) gravity
- 11. the constant velocity of a falling object when the force of air resistance equals the force of gravity
A) weight
B) free fall
C) terminal velocity
D) net force
- 12. the curved path of an object in free fall after it is given an initial forward velocity
A) fluid friction
B) projectile motion
C) air resistance
D) orbital motion
- 13. the tendency of an object to resist a change in its motion
A) inertia
B) mass
C) weight
D) momentum
- 14. a measure of the inertia of an object, which depends on the amount of matter the object contains
A) gravity
B) mass
C) weight
D) terminal velocity
- 15. the force of gravity acting on an object
A) weight
B) net force
C) momentum
D) inertia
- 16. the product of an object's mass and its velocity
A) momentum
B) force
C) power
D) energy
- 17. law stating that the total momentum of a system does not change if no net force acts on the system
A) law of conservation of mass
B) law of conservation of momentum
C) law of conservation of time
D) law of conservation of energy
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