# caleb's science 14 study guide

The flashcards below were created by user caleb1 on FreezingBlue Flashcards.

1. rate an object's positon changes over time at any momment
speed
2. rate of speed and direction of a moving object
velocity
3. measurement of the force of gravity between an object and earth
weight
4. a book resting on a table demonstrates ________ _______ because the structural strength of the table balances the gravitational force.
balanced forces
5. rate of change in an object's velocity over time
acceleration
6. the measurable or observable push or pull action on an object
force
7. objects either remain at rest or in motion unless acted on by an external force
inertia
8. the force that opposes motion
friction
9. operation that produces work
action
10. Objects stay at rest or stay in motion unless a force causes objects to move or to stop moving
Examples: A book sits on a table. A car cannot drive through a wall.
Newton's 1st Law of Motion
11. The greater the mass of an object the more force that is needed to move the object. Example: Kicking a ball. Kicking a wall.
Newton's 2nd Law of Motion
12. Every force creates an equal but opposite force. Example: A ball bounces. A rocket fires.
Newton's 3rd Law of Motion
13. Every object is attracted to every other object. The greater the resultant mass of two objects the greater the attraction; while the greater the separation of the objects, the lesser the attraction. Example: A person on the Earth. A person on the Moon.
Newton's Law of Gravitation
14. increasing velocity over time
acceleration
15. decreasing velocity over time
deceleration
16. Motion Law 2 states the greater the mass of an object the more force that is needed to move it. What formula is used to describe this?
Use "a", "F" for force and "m" mass.
What is "a"?
a = F/m (acceleration)
17. For Caleb's punishment, he must push a cart of Russet potatoes, with a mass of 10 kg. The potato cart rolls when Caleb presses with 20 N force. What is the acceleration of the rolling cart of Russets?
using a(cceleration) = F(orce)/ m(ass); a(cceleration) = 20 Newton/ 10 kilos or an acceleration rate of: 2 meters per second, per second
18. Speed and velocity both measure distance and time. What additional measurement does velocity track that speed does not?
direction
19. What are the ways in which an object can change acceleration?
• There can be a change in mass. (A rocket ship jettisons its boosters.)
• There can be a change in force. (The secondary rocket engines are engaged.)
20. Newton's 3rd Law of Motion
Every force creates an equal but opposite force. Example: A ball bounces. A rocket fires.
21. Newton's 2nd Law of Motion
The greater the mass of an object the more force that is needed to move the object. Example: Kicking a ball. Kicking a wall.
22. Newton's 1st Law of Motion
Objects stay at rest or stay in motion unless a force causes objects to move or to stop moving Examples: A book sits on a table. A car cannot drive through a wall.
 Author: caleb1 ID: 252396 Card Set: caleb's science 14 study guide Updated: 2013-12-11 21:20:49 Tags: caleb science Folders: Description: science Show Answers: