Cars A and B are moving towards each other. Vehicle speed over Earth 60 km / h Vehicle speed over ground 90 km / h. What is the speed of car A relative to car B
v1 = 60 km / h – speed of car A relative to the ground;
v2 = 90 km / h – the speed of vehicle B relative to the ground.
It is required to determine v (km / h) – the speed of car A relative to car B.
According to the condition of the problem, cars are moving towards each other. Let car A move in the positive direction of the X axis of the coordinate system, and car B in the negative direction. Then the relative speed of the car will be equal to:
v = v1 + v2 = 60 + 90 = 150 km / h.
Answer: the speed of car A relative to car B is 150 km / h.
One of the components of a person's success in our time is receiving modern high-quality education, mastering the knowledge, skills and abilities necessary for life in society. A person today needs to study almost all his life, mastering everything new and new, acquiring the necessary professional qualities.