The rest of P8

Question 1

What are the three SUVAT equations

Answer 1

V = U+AT
S = ut+1/2at^2
V^2 = U^2 + 2as

Question 2

what is the relationship between speed andbreaking distance

Answer 2

squared relationship

as speed doubles breaking distance quadruples

Question 3

what happens when current is reduced by a scale factor of 20

Answer 3

power loss is rediced by a scale factor of 400 (20^2)

P = I^2 *R

Question 4

what is the colour and voltage of live wire

Answer 4

brown
alternates between 230V and -230V
connects to the national Grid

Question 5

what is the colour and purpose of neutral wire

Answer 5

Blue
completes the circuit 0 V
connects to national grid

Question 6

prupose and colour of the earth wire

Answer 6

yellow and green

creates a path from metal case to the ground