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;
8 Cards in this Set
- Front
- Back
The formula for displacement of an object is ______, and, in a graph, it is represented by pointing an arrow to the ________.
|
Delta x= x_{2} - x_{1}
right |
|
If x_{1} is 10 meters and x_{2} is 30.0 meters. what is the change in x?
|
20.0 meters
|
|
average speed=?
|
distance traveled/ time elapsed
|
|
Velocity is used to signify ________ and ________
|
magnitude, direction
|
|
average velocity=?
|
displacement/ time elapsed= final position- initial position/ time elapsed
|
|
average acceleration=?
formula would look like _________ |
change of velocity/ time elapsed
a= v_{2}-v_[1}/ t_{2} - t_{1} |
|
The instantaneous acceleration, a, can be defined in analogy to instantaneous ________, for any specific instant: (?formula?)
|
velocity
a=lim Delta v / Delta t Delta x->0 |
|
A car accelerates along a straight road from rest to 75 km/h in 5.0 sec. What is the magnitude of its average acceleration?
|
a= v_{2}-v_[1}/ t_{2} - t_{1}
=75 km/h - 0 km/h / 5.0 sec = 15 _km/h_ s (fifteen kilometers per hour per second) |