Chapter 8.1 Flashcards Preview

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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

Formula for velocity?

V: d
T