Minia University Braking Systems Faculty of Engineering 2013-2014 Automotive & Tractors Department

Dr. Nouby Mahdy Ghazaly Eng. Mohamed Abdel-Rahman Ali

1. A car fitted with hydraulic brakes is travelling along a strait road at a

speed of 100 km/hr, the driver sees an optical and he decides to rapid

braking.

Calculate the total stopping time from the moment the driver

sees the optical until the car stop.

Calculate the total stopping distance.

Draw the relation between time and car velocity (speed) and

Determine after what time the car speed is 40 km/hr.

2. The brakes of a car applied from when the car is doing 120 km/hr, How

far the car gone when the speed of the car is 50 km/hr, Draw the

relation between time and velocity and determine the time taken to

get a velocity of 80 km/hr. (The car fitted with ABS).

3. A car is travelling at 110 km/hr when the driver sees something that

requires rapid braking.

Find the total distance in (Meters) travelled by the car from the

moment the driver first sees the problem until the car stop.

Draw the relation between time and car velocity (speed) and

Determine the velocity after 1 sec. and 2 sec.

4. A heavy vehicle fitted with air brakes system is travelling at 60 km/hr

along strait road.

Find the total distance travelled by the car from the moment the

driver decided to stop.

Find the total distance travelled by the car to reduce the car

velocity to 20 km/hr.

Draw the relation between time and car velocity (speed) and

determine the time required to reduce the car velocity to 25

km/hr if the braking applied to stop the car.