Kinematics Flashcards

You may prefer our related Brainscape-certified flashcards:
1
Q

difference between reliability and validity

A

Reliability means that something is consistent time and time again, whereas validity means that the test is a precise way of measuring what it is supposed to measure

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

formula for acceleration

A

a = v-u/t

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

formula for displacement

A

s = ut+1/2at^2

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

formula for v^2

A

v^2 =u^2 +2as

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

what does the gradient mean in a displacement vs time graph

A

average velocity

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

what does the gradient mean in a velocity vs time graph

A

average acceleration

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

what does the tangent mean in a displacement vs time graph

A

instantaneous velocity

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

what does the tangent mean in a velocity vs time graph

A

instantaneous acceleration

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

what does the area under a velocity vs time graph mean

A

displacement

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

what does the area under an acceleration vs time graph mean

A

change in velocity

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

what does the gradient mean in a displacement vs time^2 graph mean

A

1/2 a

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

systematic errors to consider

A
  • a stop watch runs slow or fast
  • an instrument not properly zeroed
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

human errors to consider

A
  • reaction time
  • transcriptional error (data written wrong)
How well did you know this?
1
Not at all
2
3
4
5
Perfectly