Which of the below equations for the stopping distance of a vehicle is correct?Stopping distance = thinking distance – braking distanceStopping distance = braking distance – thinking distanceStopping distance = thinking distance × braking distanceStopping distance = thinking distance + braking distance2What is the approximate reaction time of the average person?0.007 s0.07 s0.7 s7 s3Which of the following factors does NOT affect the thinking distance?The velocity at which the vehicle is travellingThe type of road surfaceHow tired the driver is feelingWhether or not the driver has consumed alcohol or drugs4Which of the following factors does NOT affect the braking distance of a car?The condition of its brakes and tyresDistractions (such as talking to a passenger or using a phone)The size of the braking forceThe weather conditions5(HT) Calculate the resultant force which is required to uniformly decelerate a car of mass 2000 kg to rest from an initial velocity of 20 m/s over a period of 10 seconds.4 kN400 kN40 kN4000 kN6The braking distance of a vehicle is proportional to the square of its initial velocity.  If a vehicle has a braking distance of 10 metres when travelling at 15 mph, what will its braking distance be when it is travelling at 30 mph?20 m40 m100 m50 m

Define the thinking distance, braking distance and stopping distance of a moving vehicle

Which of the following factors does NOT affect the thinking distance?The type of road surfaceHow tired the driver is feelingWhether or not the driver has consumed alcohol or drugsThe velocity at which the vehicle is travelling

A car driver travelling at 72 h-l suddenly sees a fallen tree on the road 40 m ahead. Heputs on the brakes to stop before he hits the tree. To put on the brakes requires 0.75 s(reaction time of the driver), after which the retardation is 8 m s-2.a. What is the total stopping time?b. How far does he travels before the brakes are applied?c. What is his total stopping distance?d. If he subsequently travels at twice the speed, how far ahead should he be ableto see clearly for safety? (Assume the deceleration is the same.)

Tests reveal that a normal driver takes about 0.75 s before he or she can react to a situation to avoid a collision. It takes about 3 s for a driver having 0.1% alcohol in his system to do the same. If the driver with 0.1% alcohol is travelling on a straight road at 72 km/h (20 m/s) and his car can decelerate at 1 m/s2, determine the shortest stopping distance (d) from the moment he see the pedestrians.Question 9Answera.320b.290c.260d.225

d) The brakes applied to a car moving with a velocity of 10 m/s come to halt in 2s. Calculate the distance it travels after the brakes are applied till it stops