On a straight highway, two cars are moving towards each other at speeds of 40 km / s and

On a straight highway, two cars are moving towards each other at speeds of 40 km / s and 60 km / h. What is the speed module of one car relative to the other?

Given:

v1 = 40 kilometers per hour – the speed of the first car;

v2 = 60 kilometers per hour – the speed of the second car.

It is required to determine v (kilometer per hour) – the modulus of the speed of one vehicle relative to another.

According to the condition of the problem, cars are moving towards each other. Let the first car move in the positive direction of the coordinate system, and the second car in the negative direction. Then we get the following expression:

v = v1 + v2 = 40 + 60 = 100 kilometers per hour.

Answer: the speed of movement of one car relative to another is 100 kilometers per hour.