Flashcards in Chapter 8.1 Deck (38):

1

## What is displacement?

### How far you have travelled from the origin.

2

## Gradient

### Slop of a graph- rise/run

3

## What is instantaneous speed?

### The speed of an object at any particular moment.

4

## True or false: a scalar quantity is a quantity that has a size.

### True

5

## What is speed?

### The measure of how quickly something moves.

6

## A vector quantity only has a magnitude. True or False

### Represented by an arrow, has a direction and a magnitude.

7

## Formula for calculating speed is?

###
V: d/t

Average speed is equal to distance travelled divided by time taken

8

## What is SI UNIT for speed?

### M/s

9

## How do you convert m/s to km/h?

### Multiply by 3.6

10

## Formula for distance?

### Average speed x time taken

11

## Distance triangle?

###
Distance

Speed- time

12

## What is another way of writing m/s?

### MS-1

13

## In a distance-time graph what does the gradient represent?

###
The steeper the gradient the faster the object.

14

## What is a distance-time graph?

### It shows how far an object is moving as time progresses.

15

## What is a displacement time graph?

### A graph that shows how the position of an object changes compared to where it started.

16

## What is a velocity time graph?

### A graph that shows the change in velocity over time. It is basically mapping acceleration.

17

## What is the difference between speed and velocity?

### Speed is the rate at which something travels while velocity is the rate at which displacement changes. Speed is scalar- velocity is vector.

18

## What does the area below a speed time graph represent?

### Distance travelled. Eg: 5 seconds at 2 m/s : 10m

19

## What does the area below a velocity time graph represent?

### Displacement.

20

## How is acceleration measured?

### M/s/s or m/s2

21

## What is acceleration?

### When an objects velocity changes, we have acceleration

22

## The velocity of an object changes if...

###
The speed changes.

The direction of motion changes.

23

## What is a force?

### A push,pull or twist on an object.

24

## What is distance?

### The measurement of the path or journey taken.

25

## Formula for force?

###
F:Ma

Force is equal to mass times acceleration

26

## What is the difference between displacement and distance?

### Displacement is how far an a object travels from its point of origin, and distance is the measurement of the path taken. Distance is scalar displacement is vector

27

## What are the 2 types of forces?

### Contact and non contact

28

## What is newtons 1st law?

###
Basically, a force is needed to get something to move.

A force is required to change the speed and direction of something that is already moving.

29

## What is newtons 2nd law?

###
F:MA

An object will accelerate in the direction of an unbalanced force acting on it.

30

## What is Newtons 3rd law?

### For every action force there is an equal or opposite reaction force.

31

## What is the formula for acceleration?

###
A:v-u

T

Final velocity- initial velocity

Time Taken

32

## How is velocity written?

### Ms-1

33

## How is acceleration written?

### Ms-2

34

## Value of each tick on a ticket timer?

### 1 50th of a second, or 0.02s

35

## What does an even spacing on a ticker timer indicate?

### Constant speed

36

## What does de acceleration look like on ticker tape?

### - - - - - - - - -

37

## What does acceleration look likes?

### - - - - - - - - -

38