Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
17 Cards in this Set
- Front
- Back
|
force |
a push, pull, or any action that has the ability to change motion |
|
|
Newton's first law |
states that objects tend to continue the motion they already have unless they are acted on by outside forces |
|
|
newton |
the SI unit of force |
|
|
net force |
the term used to describe the total of all forces acting on an object |
|
|
Newton's Second Law |
relates the net force acting on an object to its mass and acceleration |
|
|
free fall |
an object is doing this is it is accelerating due to the force of gravity |
|
|
acceleration due to gravity |
objects on earth accelerate downward at 9.8 m/s2 |
|
|
weight |
the force of gravity on an object |
|
|
air resistance |
this force acts opposite to the direction of the object's motion |
|
|
terminal velocity |
the maximum velocity reached by an object in free fall in which the forces of gravity and air resistance are equal |
|
|
inertia |
the property of an object that resists changes in motion |
|
|
What is an example of force? |
Someone or something hitting a golf ball |
|
|
What is an example of Newton's first law in everyday life? |
If someone driving slams on the breaks, the seat belt/air bag is the outside force acting upon it |
|
|
Why is Newton's first law known as the law of inertia? |
because inertia is an important idea |
|
|
What are 2 units for measuring mass, and what are 2 units for measuring force? |
Mass: Kg, g Force: N, lb |
|
|
What is the net force on an object with zero acceleration? |
0N |
|
|
What of the following have zero acceleration? |
a) a car moving forward at a constant velocity b) a kicked ball c) a skater turning left d) a parked car (d) |
