Vocabulary
What is the net change in position of an object from its starting point to its final destination, measured in a straight line with a specific direction?
A car travels 100 meters in 10 seconds. Give its velocity.
What is 10 m/s?
100 m / 10 s = 10 m/s
A runner starts at 2 m/s and accelerates at 3 m/s² for 4 seconds. How far does the runner travel?
What is 32 m?
Use the Δx=(vi)t +1/2at2 Equation.
A person walks 3 m east and then 4 m north. What is the magnitude of their displacement vector?
What is 5 m?
|
| 4 m
------
3 m
((4 m)2 + (3m)2)1/2= 5m
Give the term that describes how quickly an object's velocity changes over time.
What is acceleration?
Give the SI unit for speed.
What is m/s?
A bike travels 60 meters in 5 seconds. Give its average velocity.
What is 12 m/s?
60m/5s=12m/s
A bike is traveling at 10 m/s and accelerates at 2 m/s² for 5 seconds. What is its final velocity?
What is 20 m/s?
Use the vf=vi+at equation
A vector has components 6 m east and 8 m north. What is the magnitude of the vector?
What is 10 m?
|
| 8m
_________|
6 m
((8)2 + (6)2)1/2= 10
Provide the formula for velocity.
What is Velocity equals a change in displacement divided by a change in time?
What is meters?
A student walks 20 meters east, then 5 meters west. Give the student's displacement.
What is 15 m East?
+ 20m - 5m = +15 m or 15 m East
A skateboarder speeds up from 4 m/s to 16 m/s in 6 seconds. What is the acceleration?
What is 2 m/s2
Use the a=(vf−vi) /t equation
Give an example of a scalar quantity we have discussed (hint there are two).
What is distance & speed?
Give the term for the following definition: "the single vector that represents the combined effect of two or more individual vectors acting together."
What is a resultant vector?
Give the SI unit for acceleration.
What is m/s2?
A runner speeds up from 2 m/s to 8 m/s in 3 seconds. Give the acceleration.
(8 m/s) -(2 m/s) = 6m/s
(6 m/s)/ 3 s = 2m/s2
A car starts from rest and accelerates at 4 m/s² for 3 seconds. What is its displacement?
What is 18 m?
Use the Δx=(vi)t +1/2at2 Equation
Name the 3 types of measurements we've discussed that are considered vectors.
What is displacement, velocity, and acceleration?
Give the name of the following, "a physical quantity that is completely described by its magnitude (size or amount) alone, with no direction specified."
North & East (up & to the right): are positive
South & West (down & to the left): are negative
A car starts at 5 m/s and accelerates at 2 m/s² for 4 seconds. Give its final velocity.
What is 13 m/s?
(2 m/s2) = ((Vf) - (5 m/s))/ (4 s)
8 m/s = Vf - 5 m/s
13 m/s = Vf
A car starts at 5 m/s and accelerates at 2 m/s² for 4 seconds. What is its final velocity?
What is 13 m/s?
Use vf=vi+at
Give the proper way to format the magnitude & direction of a vector as an answer to a question.
What is (Magnitude, direction)?
Ex. ( 10m, 45 degrees)