2 Second Rule

Question 1

What is the formula of the two second rule - short method

Answer 1

km/hr / 3.6 = ms^-1
Then use the formula:
d = s x t

Question 2

What does the 2 second rule turn km/h into

Answer 2

m/s

Question 3

When should you use the 4 second rule

Answer 3

When its rainy weather

Question 4

What weather describes the 2 second rule

Answer 4

Sunny weather

Question 5

What is the point of the 4 second rule

Answer 5

Due to the low friction we need four seconds as its more likely to slip

Question 6

50km/h x 1000m/1km x 1hr/3600s = 50x1000/3600 = 13.89m/s

Answer 6

Apply 2 second rule;
13.89 x 2
= 27.78

Question 7

What is the first part of the 2 second rule long form assuming the vehicle is going 50km/h

Not the finding out the distance part

Answer 7

50km/h x 1000m/1km x 1hr/3600s
= 50x1000/3600 = 13.89m/s

Question 8

State the long form 2 second rule - assuming the vehicle is going 50km/h

Answer 8

50km/h x 1000m/1km x 1hr/3600s
= 50x1000/3600 = 13.89
=13.89 x 2
=27.78

Question 9

What would change if doing the 4 second rule instead of the 2 second rule

Answer 9

When applying the formula d = s x t
Replace t with 4 instead of 2