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

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