First, you need to find out how many meters you are traveling per second. Divide the speed by 3.6. This is because there are 3600 seconds in an hour – and as we know, speed is given in kilometers per hour. So, 60/3.6 = 16.66. You are driving 16.66 meters per second, and in three seconds, you will have driven 50 meters. Therefore, if you are three seconds behind the car in front of you, you are approximately 50 meters behind.