kinesiology + biomechanics

Question 1

Newtons first law

Answer 1

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

Question 2

Newton 2nd law

Answer 2

f = m x a

Question 3

newtons 3rd law

Answer 3

every action has an equal and opposite reaction

Question 4

LINEAR MOTION
displacement (x)

Answer 4

change in position (x)
m

Question 5

LINEAR MOTION

MOMENTUM (p)

Answer 5

mass X velocity

kg.m.s-1

Question 6

LINEAR MOTION

VELOCITY (V)

Answer 6

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

m.s-1

Question 7

LINEAR MOTION

ACCELERATION (A)

Answer 7

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

m.s^2

Question 8

LINEAR MOTION

FORCE (F)

Answer 8

mass x acceleration

kg.m.s-2 = N

Question 9

LINEAR MOTION

IMPULSE (IMP)

Answer 9

force X time = change in momentum (p)

kg.m.s-1 = N.s

Question 10

LINEAR MOTION

KINETIC ENERGY (KE)

Answer 10

1/2 X mass X velocity^2

J

Question 11

ANGULAR MOTION

Newtons 1st law

Answer 11

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

Question 12

ANGULAR MOTION

Newtons second law

Answer 12

TORQUE = total moment of inertia x angular acceleration

Question 13

ANGULAR MOTION

Newtons 3rd law

Answer 13

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

Question 14

ANGULAR MOMENTUM

moment of inertia

Answer 14

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

Question 15

ANGULAR MOMENTUM

angular displacement

Answer 15

change in angle
rad

Question 16

ANGULAR MOMENTUM

angular velocity (w)

Answer 16

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

Question 17

ANGULAR MOMENTUM

angular acceleration

Answer 17

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

Question 18

ANGULAR MOMENTUM

angular momentum (h)

Answer 18

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

Question 19

ANGULAR MOMENTUM

torque

Answer 19

moment of inertia x angular acceleration
N.m

Question 20

ANGULAR MOMENTUM

angular impulse

Answer 20

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

Question 21

ANGULAR MOMENTUM

kinetic energy

Answer 21

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

Question 22

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

Answer 22

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

Question 23

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

Answer 23

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

Question 24

CIRCULAR MOTION

arc length (s)

Answer 24

s = rθ

Question 25

CIRCULAR MOTION tangential velocity (VT)

Answer 25

VT = rw

Question 26

CIRCULAR MOTION tangential acceleration (aT)

Answer 26

aT = ra

Question 27

CIRCULAR MOTION radial acceleration (Ra)

Answer 27

aR = VT^2 / r = rw^2

Question 28

CIRCULAR MOTION how many degrees is 1 revolution?

Answer 28

2π radians 360 degrees

Question 29

CONSTANT ACCELERATION what do the elements of SUVAT mean?

Answer 29

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

Question 30

CONSTANT ACCELERATION what are the 4 SUVAT equations?

Answer 30

v = u + at v^2 = u^2 + 2as s = ut + 1/2at^2 s = 1/2(u+v)t

Question 31

difference between translation and rotation

Answer 31

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

Question 32

scalar vector

Answer 32

scalar: magnitude distance, speed, time vector: magnitude + direction displacement, velocity, acceleration

Question 33

kinematics kinetics

Answer 33

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

Question 34

S = U = V = A = T =

Answer 34

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

Question 35

SUVAT equations 1

Answer 35

v = u + at

Question 36

SUVAT EQUATION 2

Answer 36

v2 = u2+ 2as

Question 37

SUVAT EQUATION 3

Answer 37

s = ut + 1/2at^2

Question 38

SUVAT EQUATION

Answer 38

s = 1/2(u+v)t

Question 39

what colour photocytes are there

Answer 39

blue, red, green

Question 40

RECORDING what is the focal length?

Answer 40

distance from lens -- sensor in back of camera

Question 41

increase shutter speed = darker or lighter?

Answer 41

darker

Question 42

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

Answer 42

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