1. Motion

Question 1

What is distance?

Answer 1

Distance is a scalar quantity which specifies how far two points are apart.

Question 2

What is displacement?

Answer 2

Displacement is a vector quantity which specifies distance and direction.

Question 3

The gradient of a distance time graph is the

Answer 3

The gradient of a distance time graph is the speed.

Question 4

The gradient of a displacement time graph is the

Answer 4

The gradient of a displacement time graph is the velocity.

Question 5

The gradient of a speed time graph or a velocity time graph is the

Answer 5

The gradient of a speed time graph or a velocity time graph is the acceleration.

Question 6

The area under a speed time graph is the

Answer 6

The area under a speed time graph is the distance travelled.

Question 7

The area under a velocity time graph is the

Answer 7

The area under a velocity time graph is the displacement.

Question 8

‘The area under a graph’ is…

Answer 8

‘The area under a graph’ is the area between the graph and the time axis.

Question 9

Average speed =

Answer 9

Distance / time

Question 10

Average velocity =

Answer 10

Displacement / time

Question 11

Define acceleration.

Answer 11

Acceleration is the rate of change of velocity with time.

Question 12

a =

Answer 12

v - u / t

Question 13

v =

Answer 13

u + at

Question 14

Average speed =

2nd equation

Answer 14

v + u / 2

Question 15

A scalar quantity is one with …

Answer 15

Size only

Question 16

A vector quantity is one with …

Answer 16

Both size and direction

Question 17

Define speed

Answer 17

Distance travelled in unit time

Question 18

Define velocity

Answer 18

Distance travelled in unit time in a specified direction

Question 19

Is speed a scalar or vector quantity?

Answer 19

Scalar

Question 20

Is velocity a scalar or vector quantity?

Answer 20

Vector

Question 21

When the velocity of a body increases or decreases, we say that it …

Answer 21

Accelerates

Question 22

Is acceleration a scalar or vector quantity?

Answer 22

Vector

Question 23

Which axes do distance and time go onto on a distance/time graph?

Answer 23

Distance - y axis

Time - x axis

Question 24

A horizontal line on a distance-time graph means that the body is …

Answer 24

Stationary

Question 25

S =

Answer 25

1/2 (u + v) t

Question 26

v2 =

Answer 26

u2 + 2as

Question 27

When working out average speed from a distance-time graph, we do not work it out for each section and then take an average, but instead we work it out for the ….

Answer 27

entire journey in one fell swoop

Question 28

S =

Second equation

Answer 28

ut + 1/2 at2

Question 29

When doing questions involving motion, always choose a direction to call ….

Answer 29

Positive

Question 30

Give an example of the force of friction

Answer 30

Air resistance or drag

Question 31

If a car moves at a steady speed, the forward force from the engine must be …

Answer 31

balanced by an equal backwards force, called air resistance (a force of friction).

Question 32

The total stopping distance of a car is made up of what two parts?

Answer 32

The thinking distance and the braking distance.

Question 33

Total stopping distance =

Answer 33

Thinking distance + braking distance

Question 34

When an object moves through a fluid (liquid or gas) the opposing frictional forces are called …

Answer 34

Drag

Question 35

Drag depends on the … of the object moving through the fluid.

Answer 35

shape

Question 36

To know when a driver applies the brakes, look at when the velocity begins to …

Answer 36

Decrease