motion

Question 1

scalar quantity

Answer 1

described by only its size or magnitude

Question 2

vector quantitiy

Answer 2

described by magnitude and direction
(often shoen using arrows)

Question 3

distance and unit

Answer 3

how far an object has travelled in total
meters

Question 4

displacement
[unit]

Answer 4

how far an object has moved from its starting position in a particular direction
[meters]

Question 5

unit for speed

Answer 5

m/s

Question 6

formula for speed

Answer 6

speed=distance moved/time taken

Question 7

is direction a scalar or vector

Answer 7

scalar

Question 8

equations for average speed

Answer 8

• average speed=total distance/total time (uniform acceleration)
• average speed= inital speed + final speed/2 (u+v/2)
• rate of change of speed=final speed-inital speed/time (v-u/t)

Question 9

is speed a scalar or vector

Answer 9

scalar

Question 10

velocity

Answer 10

distance travelled in a certain direction in a certain direction in unit time

Question 11

is velocity a scalar or vector

Answer 11

vector

Question 12

velocity units

Answer 12

m/s

Question 13

velocity equation

Answer 13

velocity=displacement/time

Question 14

is displacement a vector or scalar quantity

Answer 14

vector

Question 15

is acceleration a vector or scalar quantity

Answer 15

vector

Question 16

is rate of change of speed a vector or scalar quantity

Answer 16

scalar

Question 17

average velocity

Answer 17

-average velocity=displacement/total time
-average velocity=initial velocity
+ final velocity/2 (u+v/2)
-rate of change of velocity= final velocity - initial velocity/time taken (v-u/t)

Question 18

another word for rate of change of velocity

Answer 18

acceleration

Question 19

acceleration

Answer 19

the rate of change of velocity of a body

Question 20

formula for acceleration

Answer 20

acceleration=change in velocity/time for change (a=v-u/t)

Question 21

units for acceleration

Answer 21

m/s2

Question 22

distance-time graphs

Answer 22

1. if line is horizontal the object is stationary
2. steady gradient=steady speed
   3.steeper the gradient= faster the object is moving
3. curve means getting faster (accelerating)

Question 23

displacement-time graphs what does the gradient mean

Answer 23

the velocity

Question 24

displacement-time graphs

Answer 24

1. curve= acceleration
2. steady gradient=constant velocity

Question 25

how do u fine out the velocity of an object from a displacement-time graphs

Answer 25

draw a tangent (rise/run)

Question 26

speed time graphs

Answer 26

1. horizontal line= steady speed 2. constant upwards gradient= acceleration 3. constant downwards gradient= deceleration

Question 27

area under speed time graph=

Answer 27

distance travelled

Question 28

gradient of line of speed time graph=

Answer 28

rate of change of speed

Question 29

velocity time graphs

Answer 29

constant velocity= constant acceleration

Question 30

what does the gradient of velocity time graphs tell us

Answer 30

acceleration

Question 31

area under velocity time graphs tells us

Answer 31

displacement

Question 32

equations of motion

Answer 32

1. v = u + at 2. v2 = u2 +2as 3. s = ut + 1/2at2 4. s= 1/2(u+v)t