Answer:
20/3 seconds or 6 and
seconds
Step-by-step explanation:
1. Since they are going the same direction we have to subtract the speeds off each other to see how much faster it looks like car 2 is going to the observer
16 - 13 = 3m/s
2. Since we know car 2 is overtaking car 1 by 3m/s we can calculate the time it takes before car is 20 m ahead by dividing it (if we use the formula speed = distance/time then time = distance/speed)
20/3 seconds or 6 and
seconds