MOTION

Question 1

Define distance

Answer 1

DISTANCE = SPEED X TIME
The length of the path a body follows from start to finish.

Question 2

Define displacement

Answer 2

The length of a straight line joining the start and finishing positions.

Question 3

Define speed

Answer 3

SPEED = DISTANCE / TIME
Speed is the rate of change of distance

Question 4

Define velocity

Answer 4

VELOCITY = DISPLACEMENT / TIME
The rate of change in displacement

Question 5

DEFINE ACCELERATION

Answer 5

CHANGE IN VELO / TIME
The rate of velocity change.

Question 6

DEFINE ANGULAR MOMENTUM

Answer 6

AM = ANGULAR VELOCITY X MOMENT OF INERTA
The quantity of rotation a body possesses

Question 7

DEFINE MOMENT OF INERTIA

Answer 7

Relates to the distribution of mass around the axis in a spinning system.

Question 8

Q HOW CAN A GYMNAST ALTER THEIR RATE OF SPIN.

Answer 8

1. Conservation of AM - depends on both the speed of rotation and the distance
2. AM remains constant during rotation
3. The moment of inertia is related to the distribution of mass around an axis in a spinning system.
4. The further the mass is from the axis, the greater the moment of inertia and therefore the harder it is to spin
   = Hence why its easier to perform aa tuck than a layout

Question 9

DEFINE PROJECTILE MOTION

Answer 9

The movement of a body through the air following a curved flight path under the forces of gravity.

Question 10

WHAT IS THE URH WHEN RELEASE AND LANDING HEIGHT ARE THE SAME

Answer 10

45

Question 11

RELEASE HEIGHT < LANDING HEIGHT

Answer 11

Greater than 45

Question 12

RELEASE HEIGHT > LANDING HEIGHT

Answer 12

Lower than 45

Question 13

WHAT ARE THE OTHER TWO FACTORS THAT EFFECT DISTANCE

Answer 13

Speed of Release
Height of Release