Question

Человек идет со скоростью 5 километров час относительно вагона поезда против направления движения поезд движется со скоростью 20 км ч относительно Земли С какой скоростью относительно земли движется человек

Answer 1

4 КМ  ЧАС      ..........         ...........

Answer 2

Calculation of the Person's Speed Relative to the Earth

To calculate the speed of the person relative to the Earth, we need to consider the speeds of the person and the train and their directions of motion.

Given: - Speed of the person (relative to the train): 5 km/h - Speed of the train (relative to the Earth): 20 km/h

To find the speed of the person relative to the Earth, we can use the formula:

Relative speed = Speed of A - Speed of B

In this case, A represents the person and B represents the train.

Using the formula, we can calculate the relative speed of the person:

Relative speed = 5 km/h - 20 km/h = -15 km/h

Therefore, the person is moving with a speed of 15 km/h relative to the Earth in the opposite direction of the train's motion.