kinesiology + biomechanics Flashcards

1
Q

Newtons first law

A

object at rest or moves at constant momentum unless external force acts upon it

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

Newton 2nd law

A

f = m x a

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

newtons 3rd law

A

every action has an equal and opposite reaction

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

LINEAR MOTION
displacement (x)

A

change in position (x)
m

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

LINEAR MOTION

MOMENTUM (p)

A

mass X velocity

kg.m.s-1

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

LINEAR MOTION

VELOCITY (V)

A

change in position(x) / change in time(t)

m.s-1

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

LINEAR MOTION

ACCELERATION (A)

A

change in velocity(v) / change in time (t)

m.s^2

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

LINEAR MOTION

FORCE (F)

A

mass x acceleration

kg.m.s-2 = N

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

LINEAR MOTION

IMPULSE (IMP)

A

force X time = change in momentum (p)

kg.m.s-1 = N.s

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

LINEAR MOTION

KINETIC ENERGY (KE)

A

1/2 X mass X velocity^2

J

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

ANGULAR MOTION

Newtons 1st law

A

an object will stay in constant ANGULAR MOMENTUM unless external TORQUE acts upon it

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

ANGULAR MOTION

Newtons second law

A

TORQUE = total moment of inertia x angular acceleration

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

ANGULAR MOTION

Newtons 3rd law

A

if first objects exerts torque on second object
second object will react with equal torque and magntiude in opposite direction

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

ANGULAR MOMENTUM

moment of inertia

A

(mass x distance^2)
kg.m^2

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

ANGULAR MOMENTUM

angular displacement

A

change in angle
rad

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

ANGULAR MOMENTUM

angular velocity (w)

A

change in angle / change in time
rad.s^-1

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

ANGULAR MOMENTUM

angular acceleration

A

change in angular velocity / change in time
rad.s^-2

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

ANGULAR MOMENTUM

angular momentum (h)

A

moment on inertia (i) x angular velocity (w)
kg.m^2.s^-1

19
Q

ANGULAR MOMENTUM

torque

A

moment of inertia x angular acceleration
N.m

20
Q

ANGULAR MOMENTUM

angular impulse

A

torque x change in time = angular momentum
N.m.s

21
Q

ANGULAR MOMENTUM

kinetic energy

A

1/2 x moment of inertia x angular velocity ^2
J

22
Q

what are the symbols for :
1) linear velocity
2) linear acceleration
3) linear momentum
4) linear force
5) linear impulse
6) linear kinetic energy

A

1) v
2) a
3) p
4) f
5) imp
6) ke

23
Q

what are the symbols for:
1) angular velocity
2) angular acceleration
3) angular momentum
4) torque
5) angular impulse
6) angular kinetic energy

A

1) w
2) a
3) h
4) T
5) Imp
6) Ke

24
Q

CIRCULAR MOTION

arc length (s)

A

s = rθ

25
Q

CIRCULAR MOTION

tangential velocity (VT)

A

VT = rw

26
Q

CIRCULAR MOTION

tangential acceleration (aT)

A

aT = ra

27
Q

CIRCULAR MOTION

radial acceleration (Ra)

A

aR = VT^2 / r = rw^2

28
Q

CIRCULAR MOTION

how many degrees is 1 revolution?

A

2π radians
360 degrees

29
Q

CONSTANT ACCELERATION
what do the elements of SUVAT mean?

A

S = displacement
U = initial velocity
V = final velocity
A = acceleration
T = time

30
Q

CONSTANT ACCELERATION
what are the 4 SUVAT equations?

A

v = u + at

v^2 = u^2 + 2as

s = ut + 1/2at^2

s = 1/2(u+v)t

31
Q

difference between translation and rotation

A

TRANSLATION - move through space
ROTATION - spinning around its own centre

32
Q

scalar
vector

A

scalar: magnitude
distance, speed, time

vector: magnitude + direction
displacement, velocity, acceleration

33
Q

kinematics
kinetics

A

1) motion of bodies, not think about the forces causing this motion
2) relationship between motion and causes e.g: torque, force

34
Q

S =
U =
V =
A =
T =

A

S = displacement
U = initial velocity
V = final velocity
A = acceleration
T = time

35
Q

SUVAT equations 1

A

v = u + at

36
Q

SUVAT EQUATION 2

A

v2 = u2+ 2as

37
Q

SUVAT EQUATION 3

A

s = ut + 1/2at^2

38
Q

SUVAT EQUATION

A

s = 1/2(u+v)t

39
Q

what colour photocytes are there

A

blue, red, green

40
Q

RECORDING
what is the focal length?

A

distance from lens – sensor in back of camera

41
Q

increase shutter speed = darker or lighter?

A

darker

42
Q

what is aperture
what is it measured in
bigger number = ______ hole

A

size of whole infront of camera
f number
bigger f number = smaller hole

43
Q
A