# Science Test - Chapter 14

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1. the speed and direction of a moving object
velocity
2. How fast an objects position changes with time at any given moment.
speed
3. The force of gravity between Earth and an object
weight
4. Forces that cancel each other out when acting together on a single object.
balanced forces
5. Change in velocity with respect to time
acceleration
6. A push or pull exerted by one object on another, causing a change in motion
force
7. the tendency of a moving object to keep moving in a straight line or of any object to resist a change in motion.
inertia
8. A force that opposes the motion of one object moving past another
friction
9. the force of attraction between any two objects due to their mass.
gravity
10. the force one object applies to a second, as in newtons' third law of motion, which states, "for every action, there is an equal but opposite reaction.
action
11. Newton's First law of motion states:
Objects at rest remain at rest and objects traveling at a steady rate in a straight line continue that way until a force acts on them.
12. Newton's second law of motion states:
when an unbalanced force acts on an object, the object's acceleration equals the force divided by the object's mass
13. Newton's third law of motion states:
For every action, there is an equal an opposite reaction.
14. Newton's Law of Gravitation states:
The force of gravity between two objects increases with the mass of the objects and decreases with the distance between them squared
15. Define acceleration
a change in velocity
16. Define deceleration
occurs when a force causes the speed of an object to decrease
17. define velocity
the speed and direction of a moving object
18. Know how to use the formula a = F / m

Kyle pushes a rock that weighs 5 kg (mass) with a force of of 15 N (force).  How much acceleration will the rock have?
3 meters per second each second
19. how do velocity and speed differ?
Velocity includes the direction and speed is only how fast it changes position
20. what are the ways in which an object can change acceleration?
when velocity changes acceleration changes.  when a force causes the speed to decrease, it is called deceleration.

## Card Set Information

 Author: sjbasls ID: 291692 Filename: Science Test - Chapter 14 Updated: 2014-12-17 01:55:15 Tags: science Grade Folders: science Description: asls chapter 14 science Show Answers:

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