Equations + Definitions

Question 1

acceleration formula

Answer 1

v-u
—— = a
t

Question 2

v

Answer 2

Final velocity m/s

Question 3

u

Answer 3

Initial velocity m/s

Question 4

t

Answer 4

Time s

Question 5

a

Answer 5

Acceleration m/s^2

Question 6

speed =

Answer 6

Distance / time

Question 7

Walking pace

Answer 7

1-2 m/s

Question 8

Running pace

Answer 8

5-8 m/s

Question 9

Distance gone =

Answer 9

Area under line in graph

Question 10

Scalar def

Answer 10

Size, no direction

Question 11

Vector def

Answer 11

Size and direction

Question 12

Scaler eg (3)

Answer 12

Speed, distance, energy

Question 13

Vector eg (3)

Answer 13

Velocity, displacement, acceleration

Question 14

how do you find speed from a distance time graph

Answer 14

Gradient

Question 15

What’s the gradient in a velocity time graph?

Answer 15

Acceleration

Question 16

Gravity on earth

Answer 16

10N

Question 17

V^2- u^2 = 2 x a x X

Answer 17

(final velocity)^2 - (initial velocity)^2 = 2 x acceleration x displacement

Question 18

How do find the gradient

Answer 18

Change in y / change in x

Question 19

efficiency =

Answer 19

efficiency = (useful energy out) / (total energy in)

Question 20

GPE=

Answer 20

GPE=mass x gravity x change in height

Question 21

KE =

Answer 21

KE= 1/2 x mass x velocity^2

Question 22

Thermal conductivity =

Answer 22

How easily a material loses heat energy

Question 23

Convection =

Answer 23

A transfer by heating that involves particles moving and colliding

Question 24

Conduction =

Answer 24

Transfer by heating that involves particles vibrating and colliding but NOT moving about

Question 25

Infa-red radiation =

Answer 25

Transfer by heating that involves a surface emitting a wave of energy