8.4 On the road

Question 1

What is the thinking distance?

Answer 1

» Distance travelled by a vehicle in the time it takes the driver to react

Question 2

What is the formula for the thinking distance?

Answer 2

» Speed x reaction time = thinking distance

Question 3

What are 3 things which affect the reaction time of a driver?

Answer 3

» Distractions
» Drugs
» Alcohol

Question 4

What is the braking distance?

Answer 4

» The distance travelled by a car in the time it takes to stop safely

Question 5

What equation do you use to find the brakign distance?

Answer 5

» SUVAT equations

Question 6

What is the formula to calculate the stopping distance?

Answer 6

» Brakign distance + thinking distance

Question 7

What are the steps in the practical to measure the limitng friction?

Answer 7

» Measure the limiting friction between the underside of the block and the surface
» Pull the block with an increasing force until it slides
» This is equal to the limiting friction