Kinematics Flashcards
1
Q
what is displacement?
A
- the sortest route between two points
- distance and direction
- vector quantity
2
Q
what is a position?
A
a location relative to a fixed point
3
Q
what is distance?
A
- a scalar quantity
- no direction
4
Q
what is speed?
A
- the distance travlled over a period of time
- scalar
5
Q
what is velocity?
A
- total displacment travlled over a period of time
- vector quantity
6
Q
what do distnace time graphs show us?
A
- speed as gradient
- stationary points
doesnt show direction
7
Q
what do displacment time graphs show?
A
- stationary periods
- gradient = velocity
- line curving up= velocity increasing, accelerating
8
Q
what must you take into consideration when caluclating displacment or velocity?
A
- veloicty is a vector so the direction (positive negative) must be used with the displacemnt when calculating
9
Q
A
10
Q
A
11
Q
what are some general mistakes?
A
- units: always highlight the units in the question, especially on the graph
- direction: make sure you label the positive and negative direction, and use these carefully in calculation
12
Q
what can you find from a speed time graph?
A
- area beneath the graph is the distance travelled
- gradient =
13
Q
A
14
Q
Describe the journey of the three different cars
A
15
Q
what does the area under a velocity time graph imply?
A
- if area is completly positive/negative then it is distance
- if area is a combination of positive and negative area then it is displacement
16
Q
A
17
Q
A
18
Q
Fill out the table
A
19
Q
What are the five SUVAT equations and under what assumption are they used-?
A
Assumption: Acceleration is constant
20
Q
Derive the SUVAT equations
A
21
Q
A
22
Q
A
24
Q
A
25
Q
A
26
Q
A
27
Q
A
