P9 - Motion 2️⃣✅

Question 1

What is speed?

Answer 1

Speed is the distance travelled over a certain amount of time

Question 2

What are the units for speed?

Answer 2

m/s

Question 3

What is a light gate?

Answer 3

A piece of equipment that can measure the speed of an object instantly

Question 4

What is the equation for speed?

Answer 4

speed = distance/ time

Question 5

What is a distance time graph?

Answer 5

A graph that shows a journey with distance on the y axis and time on the x axis

Question 6

What is the equation for average speed?

Answer 6

total distance travelled/ total time taken

Question 7

How do you work out the gradient of a line?

Answer 7

rise/run

Question 8

What does it mean when a line is curved on a distance time graph?

Answer 8

It means that objects speed is increasing and not at a constant speed

Question 9

What does it mean when a line is straight (/) on a distance time graph?

Answer 9

It means that the object is at a constant speed

Question 10

What is equation for acceleration?

Answer 10

change in velocity/ time taken

Question 11

What are the units for acceleration?

Answer 11

m/sSQUARED

Question 12

What is deacceleration?

Answer 12

Negative acceleration

Question 13

What is velocity?

Answer 13

Speed in a given direction e.g vector

Question 14

What is a scalar quantity?

Answer 14

A scalar quantity only has magnitude (size)

Question 15

What is a vector quantity?

Answer 15

A vector quantity has magnitude (size) and direciton

Question 16

What does the gradient of a velocity time graph represent?

Answer 16

The acceleration of the object

Question 17

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

Answer 17

Work out the area of the shape underneath the line using the scale of the graphjh

Question 18

What is the motion calculation?

Answer 18

vSQUARED = uSQUARED + 2 x a x s

Question 19

What does vSQUARED represent in the motion equation?

Answer 19

final velocity m/s

Question 20

What does uSQUARED represent in the motion equation?

Answer 20

initial velocity m/s

Question 21

What does a represent in the motion equation?

Answer 21

acceleration m/sSQUARED

Question 22

What does s represent in the motion equation?

Answer 22

displacement m

Question 23

What is displacement?

Answer 23

Displacement is the distance travelled in a given direction (vector)

Question 24

What is the rearranged equation for motion with a as the subject?

Answer 24

a = vSQUARED - USQUARED / 2 x s

Question 25

What is the rearranged equation for motion with u as the subject?

Answer 25

u = SQUARE ROOT vSQUARED - 2 x a x s

Question 26

What does it mean when a line is horizontal on a distance time graph?

Answer 26

That the object is stationary

Question 27

What does a straight (/) line mean on a veloctity time graph?

Answer 27

That the object is accelerating

Question 28

What does a straight \ line mean on a veloctity time graph?

Answer 28

That the object is deccelerating

Question 29

What does a horizontal line mean on a velocity time graph?

Answer 29

That the object is at constant velocity (can see velocity from level on y axis)

Question 30

What does a curved line mean on a velocity time graph?

Answer 30

That the object is increasing/ decreasing acceleration (depended if curve is upwards or downwards)

Question 31

What is acceleration?

Answer 31

The rate of change of velocity of an object