Year 10, Term 2 Flashcards Preview

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Flashcards in Year 10, Term 2 Deck (31):
1

Newton's first law

Any object at rest will remain this way until acted upon by a force. If you apply an unbalanced force to an object it will have a change in speed and direction

2

Newton's second law

The object will accelerate in the direction of an unbalanced force acting upon it. The size of this acceleration depends on the force and mass of the objects.

3

Newton's third law

For every action force there is an equal and opposite reaction force

4

Force

Is any interaction that will change the motion of any object

5

Elastic potential energy

Is potential energy stored or compressed in an elastic material

6

Gravitational potential energy

Is energy an object possesses because of its position above the ground

7

Kinetic energy

Is the energy of a moving object.

8

Law of conservation of mass

States that mass in an isolated system can neither be created nor destroyed

9

Power

Is the rate of doing work. Measured in Watts

10

Work

Is the energy transfered by a force that acts over a certain distance. Measured in Joules

11

Displacement

A measurement in the change of size and direction of its postition

12

Distance

A measurement of how far apart aboects are. SCALAR

13

Speed

The rate of change in distance

14

Velocity

Is the rate of change in displacement. VECTOR

15

Acceleration

Is the rate of change in velocity.

16

Gravitational acceleration

is when an falling object is accelerating towards the ground due to its gravitational pull

17

Air resistance

Is the friction between the air and a falling object

18

Terminal velocity

Is the final velocity in which an objects falls with no further acceleration possible due to air resistance

19

Error

Is a difference between the value that is measured and the actual measurement

20

Gradient

Is the steepness of the slope on a graph. rise/run

21

Random errors

An error that changes

22

Precision

How close measured values are to each other

23

Reaction time

The length of time taken for a person to respond to a given stimulus

24

Reaction distance

Is the distance travelled while reacting to a certain stimulus

25

Scalar quantity

Is a quantity that is only defined only by size not direction

26

Vector quantity

Is a quantity that is defined by both size and direction

27

Systematic error

An error that always differs the measurements by the same amount

28

Efficiency

Is the measure of useful energy output of an energy transfer

29

Instantaneous speed

The speed of a object at a a particular moment

30

Inertia

The tendancy of an object to resist change in motion

31

Potential energy

Energy possessed by an object due to its position of structure