Chapter 8.1

Question 1

What is displacement?

Answer 1

How far you have travelled from the origin.

Question 2

Gradient

Answer 2

Slop of a graph- rise/run

Question 3

What is instantaneous speed?

Answer 3

The speed of an object at any particular moment.

Question 4

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

Answer 4

True

Question 5

What is speed?

Answer 5

The measure of how quickly something moves.

Question 6

A vector quantity only has a magnitude. True or False

Answer 6

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

Question 7

Formula for calculating speed is?

Answer 7

V: d/t

Average speed is equal to distance travelled divided by time taken

Question 8

What is SI UNIT for speed?

Answer 8

M/s

Question 9

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

Answer 9

Multiply by 3.6

Question 10

Formula for distance?

Answer 10

Average speed x time taken

Question 11

Distance triangle?

Answer 11

Distance

Speed- time

Question 12

What is another way of writing m/s?

Answer 12

MS-1

Question 13

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

Answer 13

The steeper the gradient the faster the object.

Question 14

What is a distance-time graph?

Answer 14

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

Question 15

What is a displacement time graph?

Answer 15

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

Question 16

What is a velocity time graph?

Answer 16

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

Question 17

What is the difference between speed and velocity?

Answer 17

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

Question 18

What does the area below a speed time graph represent?

Answer 18

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

Question 19

What does the area below a velocity time graph represent?

Answer 19

Displacement.

Question 20

How is acceleration measured?

Answer 20

M/s/s or m/s2

Question 21

What is acceleration?

Answer 21

When an objects velocity changes, we have acceleration

Question 22

The velocity of an object changes if…

Answer 22

The speed changes.

The direction of motion changes.

Question 23

What is a force?

Answer 23

A push,pull or twist on an object.

Question 24

What is distance?

Answer 24

The measurement of the path or journey taken.

Question 25

Formula for force?

Answer 25

F:Ma

Force is equal to mass times acceleration

Question 26

What is the difference between displacement and distance?

Answer 26

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

Question 27

What are the 2 types of forces?

Answer 27

Contact and non contact

Question 28

What is newtons 1st law?

Answer 28

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.

Question 29

What is newtons 2nd law?

Answer 29

F:MA

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

Question 30

What is Newtons 3rd law?

Answer 30

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

Question 31

What is the formula for acceleration?

Answer 31

A:v-u
T
Final velocity- initial velocity
Time Taken

Question 32

How is velocity written?

Answer 32

Ms-1

Question 33

How is acceleration written?

Answer 33

Ms-2

Question 34

Value of each tick on a ticket timer?

Answer 34

1 50th of a second, or 0.02s

Question 35

What does an even spacing on a ticker timer indicate?

Answer 35

Constant speed

Question 36

What does de acceleration look like on ticker tape?

Question 37

What does acceleration look likes?

Question 38

Formula for velocity?

Answer 38

V: d

T