YEAR 9 – Topic 3 – Movement and Position

Question 1

What does acceleration mean?

Answer 1

Acceleration is the rate of increase of velocity with time.

Question 2

What does displacement mean?

Answer 2

The distance moved in a specific direction; a vector quantity.

Question 3

What does distance mean?

Answer 3

The distance moved without considering direction; a scalar quantity.

Question 4

What is the gradient?

Answer 4

The slope of a graph line measured as the rate of increase of the y-axis variable with respect to the x-axis variable.

Question 5

What is the gravitational field strength of earth?

Answer 5

10N/Kg

Question 6

What is a gravitational field strength?

Answer 6

The force in newtons exerted per kilogram of mass by gravity.

Question 7

What is the reaction time?

Answer 7

The time taken until there is a conscious response in humans to some event or stimulus.

Question 8

What does scalar mean?

Answer 8

A quantity with magnitude (size) but no specific direction. Examples: energy, mass

Question 9

What does speed mean?

Answer 9

Distance travelled per unit of time.

Question 10

What is a vector?

Answer 10

A quantity that has both magnitude (size) and direction. Examples: velocity, acceleration and force

Question 11

What is velocity?

Answer 11

The rate of increase of distance travelled in a specified direction with time.

Question 12

What does weight mean?

Answer 12

The force acting on a body due to its presence I’m a gravitational field.

Question 13

What is the average speed equation?

Answer 13

Distance
(Average) Speed =—————-
Time

Question 14

How do you remember the average speed triangle?

Answer 14

Silly Daft Twit

Question 15

How do you work out the gradient of a graph?

Answer 15

Change in y
Gradient = ——————
Change in x

Question 16

How do you work out acceleration?

Answer 16

change in velocity 
A = ——————————
          Time
  -OR-
          V-u 
A = ——-
             T

Question 17

What is the difference between velocity and speed?

Answer 17

Speed is how fast something is moving, whereas velocity is how fast an object is moving relative to the starting point.

Question 18

How do you remember the acceleration triangle?

Answer 18

All Very Tired
Change in V
A = ——————
T

Question 19

How do you work out the distance travelled on a velocity time graph?

Answer 19

Work out the area beneath the line.

Question 20

How do you work out the acceleration on a velocity time graph?

Answer 20

Work out the radiant (rise/run)